公开(公告)号：US11583847B2

公开(公告)日：2023-02-21

申请号：US16767349

申请日：2018-11-28

Applicant: CORNING INCORPORATED

Inventor： John Claude Cadotte, Jr. ,  Venu Krishna Pillai ,  Michael Kurt Schaefer ,  James Mark Seymour

IPC: B01L3/02 ,  B29C49/04 ,  B29C49/16 ,  B29C49/02 ,  B29C49/20 ,  B29K23/00 ,  B29K25/00 ,  B29K701/10

Abstract: Measuring pipettes including integral or encapsulated filters, as well as methods and apparatuses for forming the same, are provided. A filter material (e.g., a discrete element in solid form) or a filter material precursor (e.g., a foamable thermoplastic composition and a blowing agent) to be introduced into a hollow interior of a softened thermoplastic material present within a mold during pipette fabrication. A pipette includes a filter element comprising foamed polymeric material within a mouthpiece region, wherein an outer portion of the filter element is bound to or encapsulated in an inner wall of the mouthpiece region. A filter material precursor may be supplied coaxially with a tubular flow of thermoplastic material into the mold, may be supplied laterally through a mold wall, or may be injected into a molten thermoplastic pipette forming material upstream of an extruder outlet.

公开(公告)号：US20180161768A1

公开(公告)日：2018-06-14

申请号：US15579760

申请日：2016-06-08

Applicant: Corning Incorporated

Inventor： John Claude Cadotte Jr ,  Cristina Carmela Emphasis King ,  Venu Krishna Pillai ,  James Mark Seymour ,  Kimberly Sue Wayman

IPC: B01L3/02 ,  C08L25/06

CPC classification number: B01L3/021 ,  B01L2200/12 ,  B01L2300/028 ,  B01L2300/0832 ,  B01L2300/12 ,  C08L25/06 ,  C08L2203/02 ,  C08L2205/025

Abstract: A serological pipette has an elongated hollow tubular body having an optical transmission of 40 to 70% over a range of 390 to 700 nm. The pipette body is formed from a polymer composition that includes 5 to 30 wt. % poly(styrene-butadiene-styrene) and 70 to 95 wt. % polystyrene. The tubular body is formed by extrusion at a barrel temperature ranging from 400 to 500F.

公开(公告)号：US10894253B2

公开(公告)日：2021-01-19

申请号：US15579760

申请日：2016-06-08

Applicant: Corning Incorporated

Inventor： John Claude Cadotte, Jr. ,  Cristina Carmela Emphasis King ,  Venu Krishna Pillai ,  James Mark Seymour ,  Kimberly Sue Wayman

IPC: B01L3/02 ,  C08L25/06

Abstract: A serological pipette has an elongated hollow tubular body having an optical transmission of 40 to 70% over a range of 390 to 700 nm. The pipette body is formed from a polymer composition that includes 5 to 30 wt. % poly(styrene-butadiene-styrene) and 70 to 95 wt. % polystyrene. The tubular body is formed by extrusion at a barrel temperature ranging from 400 to 500 F.