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公开(公告)号：CA2948950C
公开(公告)日：2019-12-10
申请号：CA2948950
申请日：2016-11-17
Applicant: GEN ELECTRIC
Inventor： DUNN DANIEL GENE , RUUD JAMES ANTHONY , BUI PIERRE-ANDRE , CORMAN GREGORY SCOT , VARTULI JAMES SCOTT
Abstract: The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include at least one of depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process and impregnating the ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg. In some embodiments, the ceramic fibers of the planar array may include a coating, and the method may include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg.
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公开(公告)号：DE60314435D1
公开(公告)日：2007-07-26
申请号：DE60314435
申请日：2003-08-11
Applicant: GEN ELECTRIC
Inventor： SILVA JAMES MANIO , BUI PIERRE-ANDRE , FYVIE THOMAS JOSEPH , DARDARIS DAVID MICHEL
IPC: C08G64/28
Abstract: A new method of converting oligomeric chloroformates to high molecular weight polycarbonate is presented. By carefully controlling the relative concentrations and amounts of hydroxyl and chloroformate groups present in the oligomeric polycarbonate, the method of the invention provides for the efficient preparation of polycarbonate while minimizing phosgene usage. The product polycarbonates prepared by the method of the invention are fully capped with no additional phosgene required beyond that needed to prepare the oligomeric chloroformate starting material. The method of the present invention provides polycarbonates having non-detectable levels (
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公开(公告)号：CA2948254A1
公开(公告)日：2017-05-25
申请号：CA2948254
申请日：2016-11-14
Applicant: GEN ELECTRIC
Inventor： DUNN DANIEL GENE , RUUD JAMES ANTHONY , BUI PIERRE-ANDRE , CORMAN GREGORY SCOT , VARTULI JAMES SCOTT
Abstract: The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process. The method may also include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg, such as a prepreg tape. The ceramic fibers may be substantially SiC fibers, for example.
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公开(公告)号：CA2948254C
公开(公告)日：2019-12-10
申请号：CA2948254
申请日：2016-11-14
Applicant: GEN ELECTRIC
Inventor： DUNN DANIEL GENE , RUUD JAMES ANTHONY , BUI PIERRE-ANDRE , CORMAN GREGORY SCOT , VARTULI JAMES SCOTT
Abstract: The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process. The method may also include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg, such as a prepreg tape. The ceramic fibers may be substantially SiC fibers, for example.
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Patent Agency Ranking
公开(公告)号：CA2948950A1
公开(公告)日：2017-05-25
申请号：CA2948950
申请日：2016-11-17
Applicant: GEN ELECTRIC
Inventor： DUNN DANIEL GENE , RUUD JAMES ANTHONY , BUI PIERRE-ANDRE , CORMAN GREGORY SCOT , VARTULI JAMES SCOTT
Abstract: The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include at least one of depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process and impregnating the ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg. In some embodiments, the ceramic fibers of the planar array may include a coating, and the method may include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg.
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公开(公告)号：AT364652T
公开(公告)日：2007-07-15
申请号：AT03749032
申请日：2003-08-11
Applicant: GEN ELECTRIC
Inventor： SILVA JAMES , BUI PIERRE-ANDRE , FYVIE THOMAS , DARDARIS DAVID
IPC: C08G64/28
Abstract: A new method of converting oligomeric chloroformates to high molecular weight polycarbonate is presented. By carefully controlling the relative concentrations and amounts of hydroxyl and chloroformate groups present in the oligomeric polycarbonate, the method of the invention provides for the efficient preparation of polycarbonate while minimizing phosgene usage. The product polycarbonates prepared by the method of the invention are fully capped with no additional phosgene required beyond that needed to prepare the oligomeric chloroformate starting material. The method of the present invention provides polycarbonates having non-detectable levels (
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公开(公告)号：GB2446505A
公开(公告)日：2008-08-13
申请号：GB0802098
申请日：2008-02-05
Applicant: GEN ELECTRIC
Inventor： PRICE JOHN SCOTT , TSAKALAKOS LOUCAS , BUI PIERRE-ANDRE , DUNHAM BRUCE MATTHEW
IPC: H01J35/06
Abstract: A method and apparatus are provided for generating high frequency electromagnetic energy, such as x-rays, using a secondary electron emission source 10. A primary electron emitter 20 provides a primary electron current 26 directed towards a secondary electron emitter 16. The secondary emission member 16 then generates a secondary electron current 28 which causes x-ray generation when impinging upon an anode. The primary electron source 20 may be a field emitter array, a ferro-electric emitter (see Fig 6), or a thermionic emitter (see Fig 5). The secondary electron emitter may be formed of a diamond-like substance or other material with a high negative electron affinity, so that stream of secondary electrons has a current greater than that of the primary electron stream. The x-ray generator may be incorporated into a computed tomography imaging system (see Figs 9 and 10).
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公开(公告)号：DE60314435T2
公开(公告)日：2008-02-14
申请号：DE60314435
申请日：2003-08-11
Applicant: GEN ELECTRIC
Inventor： SILVA JAMES MANIO , BUI PIERRE-ANDRE , FYVIE THOMAS JOSEPH , DARDARIS DAVID MICHEL
IPC: C08G64/28
Abstract: A new method of converting oligomeric chloroformates to high molecular weight polycarbonate is presented. By carefully controlling the relative concentrations and amounts of hydroxyl and chloroformate groups present in the oligomeric polycarbonate, the method of the invention provides for the efficient preparation of polycarbonate while minimizing phosgene usage. The product polycarbonates prepared by the method of the invention are fully capped with no additional phosgene required beyond that needed to prepare the oligomeric chloroformate starting material. The method of the present invention provides polycarbonates having non-detectable levels (
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公开(公告)号：AU2003268081A1
公开(公告)日：2004-05-04
申请号：AU2003268081
申请日：2003-08-11
Applicant: GEN ELECTRIC
Inventor： SILVA JAMES MANIO , BUI PIERRE-ANDRE , FYVIE THOMAS JOSEPH , DARDARIS DAVID MICHEL
IPC: C08G64/28
Abstract: A new method of converting oligomeric chloroformates to high molecular weight polycarbonate is presented. By carefully controlling the relative concentrations and amounts of hydroxyl and chloroformate groups present in the oligomeric polycarbonate, the method of the invention provides for the efficient preparation of polycarbonate while minimizing phosgene usage. The product polycarbonates prepared by the method of the invention are fully capped with no additional phosgene required beyond that needed to prepare the oligomeric chloroformate starting material. The method of the present invention provides polycarbonates having non-detectable levels (
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