Patents by Inventor Tim L. Lambert

Tim L. Lambert 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).

  • Low bandgap polymers from fused dithiophene diester
    Patent number: 5510438
    Abstract: The present invention involves monomeric compounds having the structure: ##STR1## Substituents W and Z are independently --CN, --NO.sub.2, -aryl, -aryl-V, --COX, SO.sub.2 R, --H, or -alkyl. Substituent X is --OR, or --NR,R where R and R.sup.1 are independently -alkyl or --H. Substituent V is -halide, --NO.sub.2, --CN, --SO.sub.2 R, or --COX. At least one of W and Z is --NO.sub.2, --SO.sub.2 R, --CN, --COX or -aryl-V. In one preferred embodiment substituents W and Z are both --CN. In another preferred embodiment, substituent X is --NO.sub.2 or --CN and substituent Z is --C.sub.6 H.sub.4 NO.sub.2. These monomers are polymerized to form low bandgap polymers.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: April 23, 1996
    Assignee: Board of Regents, The University of Texas System
    Inventors: John P. Ferraris, Tim L. Lambert, Santiago Rodriguez
  • Fused heteroaromatic monomers for preparing low bandgap polymers
    Patent number: 5315014
    Abstract: The present invention involves monomeric compounds having the structure: ##STR1## Substituents W and Z are independently --CN, --NO.sub.2, --aryl, --aryl--V, --COX, SO.sub.2 R, --H, or --alkyl. Substituent X is --OR, or --NR,R where R and R.sup.1 are independently --alkyl or --H. Substituent V is --halide, --NO.sub.2, --CN, --SO.sub.2 R, or --COX. At least one of W and Z is --NO.sub.2, --SO.sub.2 R, --CN, --COX or --aryl--V. In one preferred embodiment substituents W and Z are both --CN. In another preferred embodiment, substituent X is --NO.sub.2 or --CN and substituent Z is --C.sub.6 H.sub.4 NO.sub.2. These monomers are polymerized to form low bandgap polymers.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: May 24, 1994
    Assignee: Board of Regents, The University of Texas System
    Inventors: John P. Ferraris, Tim L. Lambert, Santiago Rodriguez
  • Low bandgap polymers rf fused bithiophenes
    Patent number: 5274058
    Abstract: The present invention involves monomeric compounds having the structure: ##STR1## Substituents W and Z are independently --CN, --NO.sub.2, -aryl, -aryl-V, --COX, SO.sub.2 R, --H, or -alkyl. Substituent X is --OR, or --NR,R where R and R.sup.1 are independently -alkyl or --H. Substituent V is -halide, --NO.sub.2, --CN, --SO.sub.2 R, or --COX. At least one of W and Z is --NO.sub.2, --SO.sub.2 R, --CN, --COX or -aryl-V. In one preferred embodiment substituents W and Z are both --CN. In another preferred embodiment, substituent X is --NO.sub.2 or --CN and substituent Z is --C.sub.6 H.sub.4 NO.sub.2. These monomers are polymerized to form low bandgap polymers.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: December 28, 1993
    Assignee: Board of Regents, The University of Texas System
    Inventors: John P. Ferraris, Tim L. Lambert, Santiago Rodriguez