公开(公告)号：EP1358007B1

公开(公告)日：2010-01-13

申请号：EP02749916.9

申请日：2002-01-24

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  HARGETT, Wyatt, Price, Jr. ,  THOMAS, James, Edward

IPC分类号： B01J19/12

CPC分类号： H05B6/806 ,  B01J19/126 ,  B01J2219/1233 ,  B01J2219/1269 ,  G01L19/0007 ,  G01M3/3272 ,  H05B6/6408

摘要： A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.

公开(公告)号：EP1358007A1

公开(公告)日：2003-11-05

申请号：EP02749916.9

申请日：2002-01-24

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  HARGETT, Wyatt, Price, Jr. ,  THOMAS, James, Edward

IPC分类号： B01J19/12

CPC分类号： H05B6/806 ,  B01J19/126 ,  B01J2219/1233 ,  B01J2219/1269 ,  G01L19/0007 ,  G01M3/3272 ,  H05B6/6408

摘要： A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.

公开(公告)号：EP1214582A2

公开(公告)日：2002-06-19

申请号：EP00965009.4

申请日：2000-09-16

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  BARRETT, Matthew, Donald ,  KING, Edward, Earl

IPC分类号： G01N22/00 ,  G01N22/04 ,  G01N22/02 ,  H05B6/64 ,  H01P7/06

CPC分类号： G01N5/045 ,  G01N1/44 ,  G01N22/00 ,  G01N22/04 ,  G01N2001/4027

摘要： A volatiles analyzer is disclosed that includes a source of microwave radiation that can selectively produce at least one predetermined frequency of microwave radiation. A cavity is in communication with the source. The analyzer includes an analytical pan balance with at least its balance pan in the cavity. The walls of the cavity form a polyhedron that focuses microwave energy of the predetermined frequency on the balance pan while supporting a plurality of TM and TE modes in the cavity.

公开(公告)号：EP1214582B9

公开(公告)日：2015-02-18

申请号：EP00965009.4

申请日：2000-09-16

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  BARRETT, Matthew, Donald ,  KING, Edward, Earl

IPC分类号： G01N5/04 ,  G01N1/44 ,  G01N1/40 ,  G01N22/00 ,  G01N22/04

CPC分类号： G01N5/045 ,  G01N1/44 ,  G01N22/00 ,  G01N22/04 ,  G01N2001/4027

公开(公告)号：EP1015859B1

公开(公告)日：2002-11-13

申请号：EP98949341.6

申请日：1998-09-14

申请人： CEM Corporation

发明人： HOCHRAD, Todd, Mark ,  JENNINGS, William, Edward ,  KING, Edward, Earl

IPC分类号： G01K7/42

CPC分类号： B01J19/126 ,  B01J2219/00191 ,  B01J2219/1218 ,  G01K7/42

摘要： A method and apparatus are disclosed for externally and noninvasively determining the temperatures of chemical reactions inside a plurality of separate closed vessels that are made of materials substantially transparent to microwave radiation but that are poor conductors of heat. The method comprises exposing a plurality of substantially microwave-transparent of vessels containing chemical reagents therein to microwave radiation, concurrently measuring the temperature of the reagents inside a first vessel using a first temperature sensor inside the first vessel and while measuring the temperature of the exterior of the first vessel using a second temperature sensor positioned externally to the first vessel, and immediately thereafter successively measuring the temperature of the exterior of the remainder of the vessels using the second sensor.

公开(公告)号：EP1015859A1

公开(公告)日：2000-07-05

申请号：EP98949341.6

申请日：1998-09-14

申请人： CEM Corporation

发明人： HOCHRAD, Todd, Mark ,  JENNINGS, William, Edward ,  KING, Edward, Earl

IPC分类号： G01K7/42

CPC分类号： B01J19/126 ,  B01J2219/00191 ,  B01J2219/1218 ,  G01K7/42

摘要： A method and apparatus are disclosed for externally and noninvasively determining the temperatures of chemical reactions inside a plurality of separate closed vessels that are made of materials substantially transparent to microwave radiation but that are poor conductors of heat. The method comprises exposing a plurality of substantially microwave-transparent of vessels containing chemical reagents therein to microwave radiation, concurrently measuring the temperature of the reagents inside a first vessel using a first temperature sensor inside the first vessel and while measuring the temperature of the exterior of the first vessel using a second temperature sensor positioned externally to the first vessel, and immediately thereafter successively measuring the temperature of the exterior of the remainder of the vessels using the second sensor.

公开(公告)号：EP1214582B1

公开(公告)日：2014-07-16

申请号：EP00965009.4

申请日：2000-09-16

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  BARRETT, Matthew, Donald ,  KING, Edward, Earl

IPC分类号： G01N5/04 ,  G01N1/44 ,  G01N1/40 ,  G01N22/00 ,  G01N22/04

CPC分类号： G01N5/045 ,  G01N1/44 ,  G01N22/00 ,  G01N22/04 ,  G01N2001/4027

公开(公告)号：EP1212590B1

公开(公告)日：2005-11-16

申请号：EP00963453.6

申请日：2000-09-16

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  MOSER, Cindy, Rushing

IPC分类号： G01G19/52 ,  G01N5/04

CPC分类号： G01N5/045 ,  G01G19/52 ,  G01N1/44

摘要： The invention is an apparatus and method for obtaining accurate sample weight measurements during sample heating within a heating cavity by substantially reducing the convection currents that disrupt accurate sample weight measurement. The apparatus includes a heating cavity (11) in which a sample (20) can be placed, a source (12) for introducing microwaves into the heating cavity (11), and an analytical balance (13) for measuring the weight of the sample (20) while the sample is in the cavity (11), and an air shield (14) that is secured to the inside of the heating cavity (11) so that the air shield (14) will not contact the analytical balance (13). The air shield (14), which is made of material that is permeable to microwave radiation and yet absorbent of volatiles, is positioned in the heating cavity (11) to reduce the convection current rising from the sample (20) as the sample is heated.

公开(公告)号：EP1212590A1

公开(公告)日：2002-06-12

申请号：EP00963453.6

申请日：2000-09-16

申请人： CEM Corporation

发明人： JENNINGS, William, Edward ,  MOSER, Cindy, Rushing

IPC分类号： G01G19/52 ,  G01N5/04

CPC分类号： G01N5/045 ,  G01G19/52 ,  G01N1/44

摘要： The invention is an apparatus and method for obtaining accurate sample weight measurements during sample heating within a heating cavity by substantially reducing the convection currents that disrupt accurate sample weight measurement. The apparatus includes a heating cavity (11) in which a sample (20) can be placed, a source (12) for introducing microwaves into the heating cavity (11), and an analytical balance (13) for measuring the weight of the sample (20) while the sample is in the cavity (11), and an air shield (14) that is secured to the inside of the heating cavity (11) so that the air shield (14) will not contact the analytical balance (13). The air shield (14), which is made of material that is permeable to microwave radiation and yet absorbent of volatiles, is positioned in the heating cavity (11) to reduce the convection current rising from the sample (20) as the sample is heated.

公开(公告)号：EP0855020A2

公开(公告)日：1998-07-29

申请号：EP96932201.0

申请日：1996-09-11

申请人： CEM Corporation

发明人： BARCLAY, David, A. ,  JENNINGS, William, Edward ,  KING, Edward, E.

IPC分类号： G01N31 ,  B01J19 ,  G01N1

CPC分类号： B01J19/126 ,  B01J19/0013 ,  B01J2219/00063 ,  B01J2219/00101 ,  B01J2219/00141 ,  B01J2219/00162 ,  B01J2219/1218 ,  G01N1/44 ,  Y10T436/12 ,  Y10T436/16 ,  Y10T436/17 ,  Y10T436/176152 ,  Y10T436/176921 ,  Y10T436/25 ,  Y10T436/25125

摘要： A method for microwave assisted chemical processes is disclosed that comprises applying sufficient microwave radiation (26) to a temperature-monitored mixture of reagents (22, 23), with at least one of the reagents (22, 23) being thermally responsive to electromagnetic radiation (26) in the microwave range, and based on the monitored temperature (21), to maintain the added reagents at or closely about a predetermined temperature while substantially avoiding thermal dilution (or before substantial thermal dilution can occur) that otherwise would have been caused by the addition of the reagents to one another.