Ramanujan N Srinivasa

age ~83

from Monroeville, PA

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Ramanujan Srinivasa Phones & Addresses

r***[email protected]

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Srnivsa Aiyangr Rmnujam FRS, better known as Srinivasa Iyengar Ramanujan About this sound pronunciation (helpinfo) (Tamil: ...

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Nov 17, 2010 ... Srinivasa Aiyangar Ramanujan (Tamil: ) (22 December 1887 26 April 1920) was a ...

Photochromic Composition In A Solid Matrix
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US Patent:

7294290, Nov 13, 2007
Filed:

Jun 17, 2004
Appl. No.:

10/870833
Inventors:

Ramanujan Srinivasa - Monroeville PA, US
Assignee:

NGX, Inc. - Phoenixville PA
International Classification:

F21V 9/08
G02B 5/23
C09B 67/00
US Classification:

252586, 8603, 8657, 252582, 558303, 558411, 558418, 558421
Abstract:

The invention relates to novel photochromic composition for controlling the transmission of light comprising an organic polymer, photochromic dye, photosensitizer and an electron acceptor. The invention also includes a method for preparing photochromic films.

Nano-Talc Polymer Composites
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US Patent:

20060014880, Jan 19, 2006
Filed:

Apr 11, 2005
Appl. No.:

11/105341
Inventors:

Qiping Zhong - Cupertino CA, US
Mei Li - Mars PA, US
Ramanujan Srinivasa - Monroeville PA, US
Jianhong He - Towanda PA, US
International Classification:

C08K 3/34
US Classification:

524451000
Abstract:

The invention describes a novel polymer composite comprising nano-talc characterized by an isoelectric point of about 2.5 to about 3.5, a specific surface area greater than about 70 m/g, and surface hydroxy groups with corresponding hydroxy equivalent weight of about 210 to about 560; and a polymer phase. Specific composites include polyurethane composites prepared from aqueous nano-talc slurries and aqueous dispersible isocyanate terminated polyurethane prepolymers. The invention further embodies a polyurethane composite composition that is a primer coat, base coat or clear top coat for automobiles and metal articles.