Patents by Inventor Stephen J. Clarson

Stephen J. Clarson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Grafted polysilanes useful as photoinitiators and process for preparing same
    Patent number: 6365698
    Abstract: Grafted-polysilanes with a greater efficiency for the photoinitiation of vinyl type resins are provided. These grafted polysilanes which include both grafted cyclic polysilanes and grafted networked polysilanes have variable composition and length molecular chains grafted onto the silane backbone which aid in the solubility in vinyl type resins.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: April 2, 2002
    Assignees: Three Bond Co., Ltd., University of Cincinnati
    Inventors: Barry Goldslager, Stephen J. Clarson
  • Symmetrical dyes with large two-photon absorption cross-sections
    Patent number: 5859251
    Abstract: A two-photon absorbing chromophore of the formulaE--Ar--Ewherein the Ar core is selected from the group consisting of ##STR1## wherein R.sub.1 and R.sub.2 are alkyl groups having 8 to 12 carbon atoms, and wherein R.sub.1 and R.sub.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: January 12, 1999
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Ramamurthi Kannan, Lawrence L. Brott, Stephen J. Clarson
  • Asymmetrical dyes with large two-photon absorption cross-sections
    Patent number: 5770737
    Abstract: A two-photon absorbing chromophore of the formulaD--Ar--Awherein Ar is selected from the group consisting of ##STR1## D is selected from the group consisting of ##STR2## and A is selected from the group consisting of ##STR3## wherein R.sub.1 and R.sub.2 are alkyl groups having 8 to 12 carbon atoms, and wherein R.sub.1 and R.sub.2 are the same or different.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: June 23, 1998
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Jayprakash C. Bhatt, Lawrence L. Brott, Stephen J. Clarson
  • Radiation-curable silicone composition
    Patent number: 5750588
    Abstract: A one-part type radiation curable silicone composition capable of curing at an ordinary temperature is provided. The silicone composition comprises an unsaturated group-containing polyorganosiloxane and a polysilane in which at least one at least two silicon atoms are bonded to each other and which has at least one polyorganosiloxane group in a side chain thereof.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: May 12, 1998
    Assignee: Three Bond Co., Ltd.
    Inventors: Toru Takeoka, Stephen J. Clarson, Barry Goldslager
  • Composition and method for preparing silicone elastomers
    Patent number: 5502144
    Abstract: Compositions and a method for performing the room temperature vulcanization of silicone elastomers are disclosed. The compositions and method utilize specifically-defined hydroxy-terminated polyorganosiloxanes, cross-linking agents which contain a hydrolyzable moiety, a catalyst which exhibits catalytic action in the condensation reaction between the hydroxy groups of the polyorganosiloxanes and the hydrolyzable groups of the cross-linking agents, and a formamide-type cure accelerator component. It has been found that these compositions can be stably stored under substantially moisture-free conditions and be readily vulcanized to form solid elastomers when exposed to moisture in the air. The vulcanization process provides a fast cure and a final silicone rubber product which exhibits good depth of hardening and excellent physical properties.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: March 26, 1996
    Assignees: University of Cincinnati, Three Bond Co., Ltd.
    Inventors: Chung-Mien Kuo, Stephen J. Clarson