公开(公告)号：US11162007B2

公开(公告)日：2021-11-02

申请号：US16289789

申请日：2019-03-01

Applicant: Alpha Assembly Solutions Inc.

Inventor： Shamik Ghosal ,  Ranjit Pandher ,  Oscar Khaselev ,  Ravi Bhatkal ,  Rahul Raut ,  Bawa Singh ,  Morgana de Avila Ribas ,  Siuli Sarkar ,  Sutapa Mukherjee ,  Sathish Kumar ,  Remya Chandran ,  Pavan Vishwanath ,  Ashok Pachamuthu ,  Monnir Boureghda ,  Nitin Desai ,  Anna Lifton ,  Nirmalya Kumar Chaki

IPC: C09K5/14 ,  B22F1/00 ,  B22F1/02 ,  C01G5/00 ,  C09C1/62 ,  C09C3/08 ,  B82Y30/00

Abstract: A sintering powder comprising: a particulate having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent. A sintering paste and sintering film comprising the sintering powder. A method for making a sintered joint by sintering the sintering powder, paste, or film in the vicinity of two or more workpieces.

公开(公告)号：US20210249376A1

公开(公告)日：2021-08-12

申请号：US17245397

申请日：2021-04-30

Applicant: ALPHA ASSEMBLY SOLUTIONS INC.

Inventor： Shamik Ghoshal ,  Nirmalya Kumar Chaki ,  Poulami Sengupta Roy ,  Siuli Sarkar ,  Anubhav Rustogi

IPC: H01L23/00 ,  B22F1/00 ,  B23K35/02 ,  B22F7/04 ,  H01B1/22 ,  B22F1/02 ,  B23K1/00 ,  B23K35/30 ,  B23K35/36 ,  B23K35/365

Abstract: A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

公开(公告)号：US10998284B2

公开(公告)日：2021-05-04

申请号：US15302827

申请日：2015-04-10

Applicant: ALPHA ASSEMBLY SOLUTIONS INC.

Inventor： Shamik Ghoshal ,  Nirmalya Kumar Chaki ,  Poulami Sengupta Roy ,  Siuli Sarkar ,  Anubhav Rustogi

IPC: H01L23/00 ,  B22F1/00 ,  B23K35/02 ,  B22F7/04 ,  H01B1/22 ,  B22F1/02 ,  B23K1/00 ,  B23K35/30 ,  B23K35/36 ,  B23K35/365 ,  B23K101/40 ,  B23K103/00 ,  H05K3/32 ,  H01L25/00 ,  H01L51/52

Abstract: A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

公开(公告)号：US12122679B2

公开(公告)日：2024-10-22

申请号：US17046191

申请日：2019-04-08

Applicant: Alpha Assembly Solutions Inc.

Inventor： Nirmalya Kumar Chaki ,  Supriya Devarajan ,  Barun Das ,  Chetan Pravinchandra Shah ,  Venodh Manoharan ,  Rahul Raut ,  Bawa Singh ,  Ranjit Pandher

IPC: C01B32/194 ,  B29C51/14 ,  B29K67/00 ,  B29K69/00 ,  C08K3/04 ,  C09K5/14 ,  H01B1/04

CPC classification number: C01B32/194 ,  B29C51/14 ,  C08K3/042 ,  C09K5/14 ,  H01B1/04 ,  B29K2067/003 ,  B29K2069/00 ,  C01B2204/04 ,  C01B2204/22 ,  C01B2204/24 ,  C01B2204/32 ,  C08K2201/001 ,  C08K2201/011

Abstract: Methods for producing graphene-based products using graphene paste compositions. These methods include producing free-standing graphene foils, films, sheets, polymer supported graphene films, printed graphene structures, graphene features on polymer films, graphene substrates, and graphene metal foils. The methods impart functional characteristics, including corrosion protection and barrier properties to achieve selective enhancement of desired electrical, thermal, mechanical, barrier and other properties.

公开(公告)号：US11624000B2

公开(公告)日：2023-04-11

申请号：US16616701

申请日：2018-05-22

Applicant: Alpha Assembly Solutions Inc. ,  MacDermid Autotype Limited

Inventor： Nirmalya Kumar Chaki ,  Chetan Pravinchandra Shah ,  Barun Das ,  Supriya Devarajan ,  Siuli Sarkar ,  Rahul Raut ,  Bawa Singh ,  Anubhav Rustogi ,  Anna Jane Harris ,  Keith Paul Parsons ,  Jeffrey William Braham

IPC: C09D11/52 ,  C09D11/033 ,  C09D11/037 ,  C09D11/104 ,  H01H13/704

Abstract: This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.

公开(公告)号：US20250153280A1

公开(公告)日：2025-05-15

申请号：US19019729

申请日：2025-01-14

Applicant: Alpha Assembly Solutions Inc.

Inventor： Rahul Raut ,  Nirmalya Kumar Chaki ,  Bawa Singh ,  Ranjit Pandher ,  Siuli Sarkar

IPC: B23K35/26 ,  B23K35/02 ,  B23K35/362 ,  B23K101/42 ,  B23K103/08

Abstract: A solder paste comprising: a solder alloy, and a solder flux comprising an activator, wherein the activator comprises an organic acid activator and an organic amine activator, and wherein the molar ratio of organic acid activator to organic amine activator is from 0.8 to 2.5. A method of forming a solder joint comprising: (i) providing two or more work pieces to be joined; (ii) providing the solder paste of claim 1; and (iii) heating the solder paste in the vicinity of the work pieces to be joined.

公开(公告)号：US20240413117A1

公开(公告)日：2024-12-12

申请号：US18806922

申请日：2024-08-16

Applicant: ALPHA ASSEMBLY SOLUTIONS INC.

Inventor： Shamik Ghoshal ,  Nirmalya Kumar Chaki ,  Poulami Sengupta Roy ,  Siuli Sarkar ,  Anubhav Rustogi

IPC: H01L23/00 ,  B22F1/052 ,  B22F1/102 ,  B22F1/107 ,  B22F1/17 ,  B22F7/04 ,  B23K1/00 ,  B23K35/02 ,  B23K35/30 ,  B23K35/36 ,  B23K35/365 ,  B23K101/40 ,  B23K103/00 ,  H01B1/22 ,  H01L25/00 ,  H05K3/32 ,  H10K50/842

Abstract: A sintering powder comprising: a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.

公开(公告)号：US10259980B2

公开(公告)日：2019-04-16

申请号：US14438888

申请日：2013-10-29

Applicant: Alpha Assembly Solutions Inc.

Inventor： Shamik Ghosal ,  Ranjit Pandher ,  Oscar Khaselev ,  Ravi Bhatkal ,  Rahul Raut ,  Bawa Singh ,  Morgana Ribas ,  Siuli Sarkar ,  Sutapa Mukherjee ,  Sathish Kumar ,  Remya Chandran ,  Pavan Vishwanath ,  Ashok Pachamuthu ,  Monnir Boureghda ,  Nitin Desai ,  Anna Lifton ,  Nirmalya Kumar Chaki

IPC: B22F1/00 ,  B22F1/02 ,  C01G5/00 ,  C09C1/62 ,  C09C3/08 ,  C09K5/14 ,  B82Y30/00

Abstract: A sintering powder comprising: a particulate having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent. A sintering paste and sintering film comprising the sintering powder. A method for making a sintered joint by sintering the sintering powder, paste, or film in the vicinity of two or more workpieces.

公开(公告)号：US10130995B2

公开(公告)日：2018-11-20

申请号：US15302712

申请日：2015-04-10

Applicant: Alpha Assembly Solutions Inc.

Inventor： Nirmalya Kumar Chaki ,  Poulami Sengupta Roy ,  Siuli Sarkar ,  Sutapa Mukherjee

IPC: B22F9/24 ,  B22F1/00 ,  B22F1/02 ,  C09C1/62 ,  B22F9/04 ,  C09J1/00 ,  C09J9/02 ,  C09J11/04 ,  H01L23/00

Abstract: A method for manufacturing metal powder comprising: providing a basic metal salt solution; contacting the basic metal salt solution with a reducing agent to precipitate metal powder therefrom; and recovering precipitated metal powder from the solvent.

公开(公告)号：US12113039B2

公开(公告)日：2024-10-08

申请号：US17245397

申请日：2021-04-30

Applicant: ALPHA ASSEMBLY SOLUTIONS INC.

Inventor： Shamik Ghoshal ,  Nirmalya Kumar Chaki ,  Poulami Sengupta Roy ,  Siuli Sarkar ,  Anubhav Rustogi

IPC: H01L23/00 ,  B22F1/052 ,  B22F1/102 ,  B22F1/107 ,  B22F1/17 ,  B22F7/04 ,  B23K1/00 ,  B23K35/02 ,  B23K35/30 ,  B23K35/36 ,  B23K35/365 ,  B23K101/40 ,  B23K103/00 ,  H01B1/22 ,  H01L25/00 ,  H05K3/32 ,  H10K50/842

CPC classification number: H01L24/29 ,  B22F1/052 ,  B22F1/102 ,  B22F1/107 ,  B22F1/17 ,  B22F7/04 ,  B23K1/0016 ,  B23K35/025 ,  B23K35/3006 ,  B23K35/3601 ,  B23K35/3613 ,  B23K35/3618 ,  B23K35/365 ,  H01B1/22 ,  H01L24/11 ,  H01L24/13 ,  H01L24/27 ,  H01L24/32 ,  H01L24/81 ,  H01L24/83 ,  B22F2007/047 ,  B22F2301/255 ,  B22F2302/45 ,  B23K2101/40 ,  B23K2103/56 ,  H01L24/16 ,  H01L24/48 ,  H01L24/73 ,  H01L24/92 ,  H01L25/50 ,  H01L2224/0401 ,  H01L2224/04026 ,  H01L2224/05155 ,  H01L2224/05644 ,  H01L2224/11003 ,  H01L2224/1132 ,  H01L2224/11334 ,  H01L2224/131 ,  H01L2224/13339 ,  H01L2224/13347 ,  H01L2224/13355 ,  H01L2224/13387 ,  H01L2224/1339 ,  H01L2224/13439 ,  H01L2224/1349 ,  H01L2224/13499 ,  H01L2224/16227 ,  H01L2224/27003 ,  H01L2224/271 ,  H01L2224/27332 ,  H01L2224/27436 ,  H01L2224/27505 ,  H01L2224/2929 ,  H01L2224/29339 ,  H01L2224/29347 ,  H01L2224/29355 ,  H01L2224/29387 ,  H01L2224/2939 ,  H01L2224/29439 ,  H01L2224/2949 ,  H01L2224/29499 ,  H01L2224/32145 ,  H01L2224/32146 ,  H01L2224/32225 ,  H01L2224/32245 ,  H01L2224/48227 ,  H01L2224/48247 ,  H01L2224/73265 ,  H01L2224/81075 ,  H01L2224/81192 ,  H01L2224/81203 ,  H01L2224/8121 ,  H01L2224/8184 ,  H01L2224/81948 ,  H01L2224/83075 ,  H01L2224/83191 ,  H01L2224/83192 ,  H01L2224/83203 ,  H01L2224/8321 ,  H01L2224/83439 ,  H01L2224/83447 ,  H01L2224/8384 ,  H01L2224/83948 ,  H01L2224/92247 ,  H01L2224/94 ,  H01L2924/00014 ,  H01L2924/0665 ,  H01L2924/12041 ,  H01L2924/12044 ,  H01L2924/1461 ,  H01L2924/20102 ,  H01L2924/20103 ,  H01L2924/20104 ,  H01L2924/20105 ,  H01L2924/20106 ,  H01L2924/20107 ,  H01L2924/20108 ,  H01L2924/20109 ,  H01L2924/2011 ,  H01L2924/206 ,  H01L2924/2064 ,  H05K3/321 ,  H10K50/8426 ,  H01L2224/83203 ,  H01L2924/00012 ,  H01L2224/94 ,  H01L2224/83 ,  H01L2224/29339 ,  H01L2924/0105 ,  H01L2224/29339 ,  H01L2924/01046 ,  H01L2224/29339 ,  H01L2924/01047 ,  H01L2224/29339 ,  H01L2924/01029 ,  H01L2224/29339 ,  H01L2924/01028 ,  H01L2224/29439 ,  H01L2924/00014 ,  H01L2224/29355 ,  H01L2924/00014 ,  H01L2224/29347 ,  H01L2924/01028 ,  H01L2224/29347 ,  H01L2924/01028 ,  H01L2924/0103 ,  H01L2224/29387 ,  H01L2924/0493 ,  H01L2924/01004 ,  H01L2224/2949 ,  H01L2924/00012 ,  H01L2224/2939 ,  H01L2924/0665 ,  H01L2224/271 ,  H01L2924/00014 ,  H01L2224/27436 ,  H01L2924/00014 ,  H01L2224/94 ,  H01L2224/27 ,  H01L2224/05155 ,  H01L2924/00014 ,  H01L2224/05644 ,  H01L2924/00014 ,  H01L2224/83439 ,  H01L2924/00014 ,  H01L2224/83447 ,  H01L2924/01074 ,  H01L2224/8321 ,  H01L2924/00014 ,  H01L2224/81203 ,  H01L2924/00012 ,  H01L2224/94 ,  H01L2224/81 ,  H01L2224/13339 ,  H01L2924/0105 ,  H01L2224/13339 ,  H01L2924/01046 ,  H01L2224/13339 ,  H01L2924/01047 ,  H01L2224/13339 ,  H01L2924/01029 ,  H01L2224/13339 ,  H01L2924/01028 ,  H01L2224/13439 ,  H01L2924/00014 ,  H01L2224/13355 ,  H01L2924/00014 ,  H01L2224/13347 ,  H01L2924/01028 ,  H01L2224/13347 ,  H01L2924/01028 ,  H01L2924/0103 ,  H01L2224/13387 ,  H01L2924/0493 ,  H01L2924/01004 ,  H01L2224/1349 ,  H01L2924/00012 ,  H01L2224/1339 ,  H01L2924/0665 ,  H01L2224/131 ,  H01L2924/00014 ,  H01L2224/11436 ,  H01L2924/00014 ,  H01L2224/94 ,  H01L2224/11 ,  H01L2224/8121 ,  H01L2924/00014 ,  H01L2924/00014 ,  H01L2224/45099 ,  H01L2224/1132 ,  H01L2924/00014 ,  H01L2224/73265 ,  H01L2224/32225 ,  H01L2224/48227 ,  H01L2924/00012 ,  H01L2224/73265 ,  H01L2224/32245 ,  H01L2224/48247 ,  H01L2924/00012 ,  H01L2224/73265 ,  H01L2224/32145 ,  H01L2224/48247 ,  H01L2924/00 ,  H01L2224/73265 ,  H01L2224/32145 ,  H01L2224/48227 ,  H01L2924/00 ,  H01L2224/92247 ,  H01L2224/73265 ,  H01L2224/32225 ,  H01L2224/48227 ,  H01L2924/00 ,  H01L2224/92247 ,  H01L2224/73265 ,  H01L2224/32245 ,  H01L2224/48247 ,  H01L2924/00

Abstract: A sintering powder comprising:



a first type of metal particles having a mean longest dimension of from 100 nm to 50 μm.