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1. 发明授权

US07873727B2 System and method for evaluating streaming multimedia quality 有权
标题翻译：评估流媒体质量的系统和方法
公开(公告)号：US07873727B2
公开(公告)日：2011-01-18
申请号：US12048029
申请日：2008-03-13
申请人： Sourav Pal , Sumantra Kundu , Kalyan Basu , Sajal Das
发明人： Sourav Pal , Sumantra Kundu , Kalyan Basu , Sajal Das
IPC分类号： G06F13/00
CPC分类号： H04L65/80
摘要： A system and computer program for evaluating in real-time streaming multimedia quality. The system including a multimedia server connected to a multimedia source and a remote client in communication with the multimedia server over a network. The multimedia server is configured to receive multimedia content from the multimedia source and to transmit the multimedia content as a multimedia stream. The multimedia stream includes a plurality of audio frames and a plurality of video frames. The remote client is configured to establish a multimedia session with the multimedia server, receive the multimedia stream via the multimedia session, monitor the media quality of the multimedia stream, and passively compute a subjective quality of the multimedia stream.
摘要翻译：一种用于实时流式传输多媒体质量评估的系统和计算机程序。该系统包括连接到多媒体源的多媒体服务器和通过网络与多媒体服务器通信的远程客户机。多媒体服务器被配置为从多媒体源接收多媒体内容并以多媒体流的形式发送多媒体内容。多媒体流包括多个音频帧和多个视频帧。远程客户端被配置为与多媒体服务器建立多媒体会话，经由多媒体会话接收多媒体流，监视多媒体流的媒体质量，以及被动地计算多媒体流的主观质量。

2. 发明申请

US20090234940A1 SYSTEM AND METHOD FOR EVALUATING STREAMING MULTIMEDIA QUALITY 有权
标题翻译：用于评估流域多媒体质量的系统和方法
公开(公告)号：US20090234940A1
公开(公告)日：2009-09-17
申请号：US12048029
申请日：2008-03-13
申请人： Sourav Pal , Sumantra Kundu , Kalyan Basu , Sajal Das
发明人： Sourav Pal , Sumantra Kundu , Kalyan Basu , Sajal Das
IPC分类号： G06F15/173
CPC分类号： H04L65/80
摘要： A system and computer program for evaluating in real-time streaming multimedia quality. The system including a multimedia server connected to a multimedia source and a remote client in communication with the multimedia server over a network. The multimedia server is configured to receive multimedia content from the multimedia source and to transmit the multimedia content as a multimedia stream. The multimedia stream includes a plurality of audio frames and a plurality of video frames. The remote client is configured to establish a multimedia session with the multimedia server, receive the multimedia stream via the multimedia session, monitor the media quality of the multimedia stream, and passively compute a subjective quality of the multimedia stream
摘要翻译：一种用于实时流式传输多媒体质量评估的系统和计算机程序。该系统包括连接到多媒体源的多媒体服务器和通过网络与多媒体服务器通信的远程客户机。多媒体服务器被配置为从多媒体源接收多媒体内容并以多媒体流的形式发送多媒体内容。多媒体流包括多个音频帧和多个视频帧。远程客户端被配置为与多媒体服务器建立多媒体会话，经由多媒体会话接收多媒体流，监视多媒体流的媒体质量，以及被动地计算多媒体流的主观质量

3. 发明申请

US20160369040A1 High temperature three dimensional printing compositions 有权
标题翻译：高温三维印刷组合物
公开(公告)号：US20160369040A1
公开(公告)日：2016-12-22
申请号：US14756942
申请日：2015-10-30
申请人： Sajal Das , Christopher N. Das , Patrick Shipman , Benjamin G. Baxter
发明人： Sajal Das , Christopher N. Das , Patrick Shipman , Benjamin G. Baxter
IPC分类号： C08G59/14 , C08L79/04 , C08K3/36 , C08L85/02 , C08K3/40 , C08L63/00 , C08L65/02 , C08G73/06 , C08K3/04
CPC分类号： C08G59/1477 , B29C67/00 , B33Y70/00 , B33Y80/00 , C08G14/06 , C08G59/4014 , C08G63/91 , C08G65/485 , C08G73/128 , C08J3/243 , C08J2361/14 , C08J2361/34 , C08J2463/10 , C08K5/1539 , C08L61/14 , C08L61/34 , C08L63/00 , C08L65/02 , C08L79/08 , C08L79/085 , C08L85/02
摘要： A thermosetting resin composition has particular applications in three dimensional (3-D) printing. The thermosetting resin composition exhibits high performance and is characterized by a high temperature two stage cure resin composition. The thermosetting resin composition comprises cyanate esters and other high temperature resins, photo curable monomers, photo initiator, metal catalyst or ionic liquid catalyst. The thermosetting resin composition cures at room temperature to form 3-D objects and upon further post cure these objects exhibit high temperature properties enabling use at temperatures exceeding 150C.
摘要翻译：热固性树脂组合物在三维（3-D）印刷中具有特别的应用。热固性树脂组合物表现出高性能，其特征在于高温两段固化树脂组合物。热固性树脂组合物包括氰酸酯和其它高温树脂，光固化单体，光引发剂，金属催化剂或离子液体催化剂。热固性树脂组合物在室温下固化以形成3-D物体，并且在进一步后固化时，这些物体表现出高温性能，能够在超过150℃的温度下使用。

4. 发明申请

US20140058057A1 Polyimide oligomers 有权
标题翻译：聚酰亚胺低聚物
公开(公告)号：US20140058057A1
公开(公告)日：2014-02-27
申请号：US13573141
申请日：2012-08-24
申请人： Sajal Das , Vilas M. Chopdekar , Megan B. Casey
发明人： Sajal Das , Vilas M. Chopdekar , Megan B. Casey
IPC分类号： C08G73/10
CPC分类号： C08G73/1067 , C08G73/126 , C08G73/127
摘要： Polyimide oligomers of the general formula: M-(Z-Y-X-Y-Z)n-M wherein n is an integer of 1 to 20; X comprises an aromatic diamine containing 2-4 aryl moieties, each of which contains 0-4 substituents; Z is independently the same as X or is a different aromatic diamine containing 1-4 aryl moieties, each of which contains 0-4 substituents; Y comprises an aromatic dianhydride containing 1-4 aryl moieties, each of which contains 0-4 substituents; and M is independently the same as Y or is a substituted or unsubstituted anhydride, a substituted or unsubstituted dianhydride, a substituted or unsubstituted bisimide, or a substituted or unsubstituted monomeric or oligomeric phthalonitrile.
摘要翻译：具有通式M-（Z-Y-X-Y-Z）n-M的聚酰亚胺低聚物，其中n为1-20的整数; X包含含有2-4个芳基部分的芳族二胺，每个芳基部分含有0-4个取代基; Z独立地与X相同，或者是含有1-4个芳基部分的不同芳族二胺，每个芳基部分含有0-4个取代基; Y包含含有1-4个芳基部分的芳族二酐，每个芳基部分含有0-4个取代基; 和M独立地与Y相同或为取代或未取代的酸酐，取代或未取代的二酐，取代或未取代的双酰亚胺，或取代或未取代的单体或低聚邻苯二甲腈。

5. 发明授权

US4851279A Fibers made from cyanato group containing phenolic resins, and phenolic triazines resins 失效
标题翻译：由含氰基的酚醛树脂制成的纤维和酚醛树脂
公开(公告)号：US4851279A
公开(公告)日：1989-07-25
申请号：US135946
申请日：1987-12-21
申请人： Sajal Das , Dusan C. Prevorsek
发明人： Sajal Das , Dusan C. Prevorsek
IPC分类号： C08G8/28 , C08G73/06
CPC分类号： C08G73/0655 , C08G8/28 , Y10T428/2904 , Y10T428/2913 , Y10T428/2967 , Y10T442/696
摘要： The present invention is a fiber comprising cyanato group containing phenolic resin comprising repeating units of the formula: ##STR1## wherein p is 0 or an integer of one or more, q is 0 or an integer of 1 or more, X is a radical selected from the group consisting of: --CH.sub.2 --, --CO--, --SO.sub.2 --, ##STR2## and R is the same or different and is selected from the group consisting of hydrogen and methyl radicals. The fiber of the present invention can be made a phenolic triazine derived from the cyanato group containing phenolic resin.
摘要翻译：本发明是一种含有含氰基的酚醛树脂的纤维，它包含下式的重复单元：其中p是0或一个或多个q的整数，q是0或1或更大的整数，X是选自的基团由以下组成：-CH 2 - ， - CO - ， - SO 2 - ，＆lt; IMAGE＆gt;和R 1相同或不同，并且选自氢和甲基。本发明的纤维可以制成由含氰基的酚醛树脂衍生的酚三嗪。

6. 发明授权

US4831086A Cyanato group containing phenolic resins, phenolic triazines derived therefrom 失效
标题翻译：含有酚醛树脂的氰基组合物，由其衍生的酚类三嗪
公开(公告)号：US4831086A
公开(公告)日：1989-05-16
申请号：US104700
申请日：1987-10-05
申请人： Sajal Das , Dusan C. Prevorsek
发明人： Sajal Das , Dusan C. Prevorsek
IPC分类号： C08G8/28 , C08G8/00 , C08G73/00 , C08G73/06 , C08G73/10 , C08L79/08
CPC分类号： C08G8/00 , C08G73/0655
摘要： The present invention is a cyanato group containing phenolic resin of the formula: ##STR1## wherein n is 0 or an integer of one or more, and R is the same or different and is selected from the group consisting of hydrogen and methyl radicals. The advancement over the art is that the resin of the present invention is stable and has a long shelf life. This is indicated by the gel time of greater than 1 minute, preferably greater than 2 minutes, more preferably greater than 10 minutes, and most preferably greater than 20 minutes at 155.degree. C. Alternately, the improved phenolic triazine resin of the present invention can be characterized as having a thermal stability indicated by thermal decomposition temperature of at least 400.degree. C. and preferably of at least 450.degree. C. as measured by Thermal Gravimetric Analysis (TGA).
摘要翻译：本发明是含有下式的含氰基的酚醛树脂，其结构式如下：其中n为0或一个或多个整数，R为相同或不同的并且选自氢和甲基。本领域的进步是本发明的树脂是稳定的并且具有长的保质期。这通过在155℃下大于1分钟，优选大于2分钟，更优选大于10分钟，最优选大于20分钟的凝胶时间表示。或者，本发明的改进的酚醛三嗪树脂可以其特征在于通过热重分析（TGA）测定的热分解温度为至少400℃，优选为至少450℃的热稳定性。

7. 发明授权

US08901274B2 Polyimide oligomers 有权
标题翻译：聚酰亚胺低聚物
公开(公告)号：US08901274B2
公开(公告)日：2014-12-02
申请号：US13573141
申请日：2012-08-24
申请人： Sajal Das , Vilas M. Chopdekar , Megan B. Casey
发明人： Sajal Das , Vilas M. Chopdekar , Megan B. Casey
IPC分类号： C08G69/26
CPC分类号： C08G73/1067 , C08G73/126 , C08G73/127
摘要： Polyimide oligomers of the general formula: M-(Z—Y—X—Y—Z)n-M wherein n is an integer of 1 to 20; X comprises an aromatic diamine containing 2-4 aryl moieties, each of which contains 0-4 substituents; Z is independently the same as X or is a different aromatic diamine containing 1-4 aryl moieties, each of which contains 0-4 substituents; Y comprises an aromatic dianhydride containing 1-4 aryl moieties, each of which contains 0-4 substituents; and M is independently the same as Y or is a substituted or unsubstituted anhydride, a substituted or unsubstituted dianhydride, a substituted or unsubstituted bisimide, or a substituted or unsubstituted monomeric or oligomeric phthalonitrile.
摘要翻译：具有通式M-（Z-Y-X-Y-Z）n-M的聚酰亚胺低聚物，其中n为1-20的整数; X包含含有2-4个芳基部分的芳族二胺，每个芳基部分含有0-4个取代基; Z独立地与X相同，或者是含有1-4个芳基部分的不同芳族二胺，每个芳基部分含有0-4个取代基; Y包含含有1-4个芳基部分的芳族二酐，每个芳基部分含有0-4个取代基; 和M独立地与Y相同或为取代或未取代的酸酐，取代或未取代的二酐，取代或未取代的双酰亚胺，或取代或未取代的单体或低聚邻苯二甲腈。

8. 发明授权

US5137989A Process for making cyanato containing phenolic resins 失效
标题翻译：制备含有酚醛树脂的CYANATO的方法
公开(公告)号：US5137989A
公开(公告)日：1992-08-11
申请号：US402170
申请日：1989-09-01
申请人： Sajal Das
发明人： Sajal Das
IPC分类号： C08G8/28
CPC分类号： C08G8/28
摘要： The present invention is directed to a process of preparing a cyanato group containing phenolic resin by reacting the corresponding phenolic resin with a tertiary amine in a water immiscible, non-hydrogen bonding solvent at a temperature of preferably less than about 25.degree. C. to form the corresponding ammonium salt of the phenolic resin; and reacting the ammonium salt with a cyanogen halide at a temperature equal to or less than about 0.degree. C. in said solvent to form the cyanato containing phenolic resin.
摘要翻译：本发明涉及一种通过使相应的酚醛树脂与叔胺在水不混溶的非氢键合溶剂中在优选低于约25℃的温度下反应来制备含氰基的酚醛树脂的方法，以形成相应的酚醛树脂的铵盐; 并在等于或低于约0℃的温度下在所述溶剂中使铵盐与卤化氰反应，形成含氰化的酚醛树脂。

9. 发明授权

US4988780A Flame resistant article made of phenolic triazine and related method using a pure cyanato novolac 失效
标题翻译：使用酚醛三嗪制成的耐火制品及相关方法，使用纯的氰基酚醛清漆
公开(公告)号：US4988780A
公开(公告)日：1991-01-29
申请号：US232407
申请日：1988-08-15
申请人： Sajal Das , Dusan C. Prevorsek , Raj Sharma , Bruce DeBona
发明人： Sajal Das , Dusan C. Prevorsek , Raj Sharma , Bruce DeBona
IPC分类号： C08L79/04 , B32B5/00 , B32B27/00 , C08G8/28 , C08G73/06 , C08K7/02
CPC分类号： C08G8/28 , C08G73/0655
摘要： The present invention is flame resistant article and related method, made of phenolic triazine resin derived from a cyanato group containing phenolic resin of the formula: ##STR1## wherein: n is a positive whole number greater than or equal to 1;q and r are the same or different at each occurrence and are whole numbers from 0 to 3, with the proviso that the sum of q and r at each occurrence is equal to 3;Z is --CN, or hydrogen and --CN;o and p are the same or different at each occurrence and are whole numbers from 0 to 4 with the proviso that the sum of o and p at each occurrence is equal to 4;--X-- is a divalent organic radical; andR.sub.3 is the same or different at each occurrence and is a substituent other than hydrogen which is unreactive under conditions necessary to completely cure the copolymer.
摘要翻译：本发明是由具有下列通式的含氰基的酚醛树脂衍生的酚醛三嗪树脂制成的耐火制品及相关方法：其中：n是大于或等于1的正整数; q和r在每次出现时相同或不同，为0〜3的整数，条件是每次出现时q和r之和等于3; Z是-CN，或氢和-CN; o和p在每次出现时相同或不同，为0至4的整数，条件是每次出现时o和p之和等于4; -X-是二价有机基团; 并且R3在每次出现时相同或不同，并且是在完全固化共聚物所必需的条件下为非反应性的氢以外的取代基。

10. 发明授权

US4757118A Thermosettable modified phenolic polyester imide resins 失效
公开(公告)号：US4757118A
公开(公告)日：1988-07-12
申请号：US821657
申请日：1986-01-23
申请人： Sajal Das , Dusan C. Prevorsek
发明人： Sajal Das , Dusan C. Prevorsek
IPC分类号： C08G8/28 , C08G73/06 , C08G73/16 , C08G8/36
CPC分类号： C08G73/0655 , C08G73/16 , C08G8/28
摘要： Modified phenolic resins and cured resins prepared therefrom.

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