Christopher M Hill

US Patent:

20110212329, Sep 1, 2011

Filed:

Feb 28, 2011

Appl. No.:

13/037151

Inventors:

Edward J.A. Pope - Oak Park CA, US
Christopher L. Hill - Woodland Hills CA, US
Carl N. Brabham - Thousand Oaks CA, US
Jerry M. King - Granada Hills CA, US
Bernard T. Morkunas - Thousand Oaks CA, US

International Classification:

C01B 31/36

US Classification:

428367, 423345

Abstract:

A novel polycrystalline stoichiometric fine SiC fiber substantially free of impurities is produced using a novel pre-ceramic polymer. The pre-ceramic polymer is prepared by reacting a mixture of chlorodisilane, boron trichloride, and a vinyl chlorodisilane with an excess of hexamethyldisilazane to form the pre-ceramic polymer resin, which may then be melt-spun, cured, pyrolyzed and heat-treated to obtain the finished SiC fiber. The manufacturing process for the production of the fine SiC ceramic fiber allows for flexibility with respect to cross-linking, in that low-cost thermal treatments may replace more complex methods, while obtaining fibers with improved materials properties as compared to currently available SiC fibers.

US Patent:

20120237765, Sep 20, 2012

Filed:

Feb 21, 2012

Appl. No.:

13/401627

Inventors:

Edward J.A. Pope - Oak Park CA, US
Christopher L. Hill - Westlake Village CA, US

International Classification:

C01B 31/36
D02G 3/16
C08G 77/54
B29B 11/10
B29B 13/02

US Classification:

428367, 264 8, 264 6, 528 32, 423345

Abstract:

A novel polycrystalline stoichiometric fine SiC fiber substantially free of impurities is produced using a novel pre-ceramic polymer. The pre-ceramic polymer is prepared by reacting a mixture of chlorodisilane, boron trichloride, and a vinyl chlorodisilane with an excess of hexamethyldisilazane to form the pre-ceramic polymer resin, which may then be melt-spun, cured, pyrolyzed and heat-treated to obtain the finished SiC fiber. The manufacturing process for the production of the fine SiC ceramic fiber allows for flexibility with respect to cross-linking, in that low-cost thermal treatments may replace more complex methods, while obtaining fibers with improved materials properties as compared to currently available SiC fibers.

US Patent:

20220316265, Oct 6, 2022

Filed:

Jun 24, 2022

Appl. No.:

17/808742

Inventors:

- Eagan MN, US
Thomas James Hensrud - Apple Valley MN, US
Gaetano Ling - Palo Alto CA, US
Christopher Steven Hill - San Francisco CA, US
Nikolaj Dam Roadley-Battin - San Francisco CA, US

International Classification:

E06B 7/10
F21S 11/00
E04D 13/03

Abstract:

A fenestration system includes one or more of a light modulation controller or ventilation modulation controller. The light modulation controller is in communication with at least one light modulation element of a fenestration assembly having a frame and a panel. The light modulation controller includes a light prescription module configured to provide a specified light prescription for the building interior. A lighting difference module is configured to determine a prescription difference between the specified light prescription and ambient light. A dynamic light module of the light modulation controller operates the at least one light modulation element according to the prescription difference. The ventilation modulation controller is in communication with at least one operator configured to open and close the panel. A ventilation prescription module provides a specified ventilation prescription for the building interior, and a dynamic ventilation module implements panel closing and opening according to the specified ventilation prescription.