Patents by Inventor William M. Stark

William M. Stark 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).

  • Patent number: 4824947
    Abstract: A phthalocyanine compound of the formula: ##STR1## wherein Pc is a phthalocyanine nucleus;each R independently is optionally substituted phenyl;m is 4 to 12;V is H or C.sub.1-4 -alkyl;each R.sup.1 independently is optionally substituted phenylene or naphthylene in which the S atom and group N-V are attached to adjacent nuclear carbon atoms;and n is 2 to 6;provided that R is not R.sup.1 -NHV.The compounds have a significant absorption band in the near infra red and are soluble in non-polar organic media. The compounds are useful in many applications where absorption of infra-red radiation is desirable, such as in OCR readable inks, security printing and reprographic toners.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: April 25, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: William M. Stark
  • Patent number: 4115552
    Abstract: Antibiotic A-4696, produced by Actinoplanes sp., strain ATCC 23342, under submerged aerobic conditions in a liquid culture medium isolated from the fermentation broth by adsorption on activated carbon, eluted therefrom with a 1% sulfuric acid solution in acetone, and purified over sulfuric acid-washed alumina has antibacterial and growth promotant activity.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: September 19, 1978
    Assignee: Eli Lilly and Company
    Inventors: Robert L. Hamill, William M. Stark, Donald C. DeLong
  • Patent number: 4064233
    Abstract: Antibiotic A-4696, produced by Actinoplanes sp., strain ATCC 23342, under submerged aerobic conditions in a liquid culture medium isolated from the fermentation broth by adsorption on activated carbon, eluted therefrom with a 1% sulfuric acid solution in acetone, and purified over sulfuric acid-washed alumina has antibacterial and growth promotant activity.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: December 20, 1977
    Assignee: Eli Lilly and Company
    Inventors: Robert L. Hamill, William M. Stark, Donald C. DeLong
  • Patent number: 3952095
    Abstract: Antibiotic A-4696, produced by Actinoplanes sp., strain ATCC 23342, under submerged aerobic conditions in a liquid culture medium, isolated from the fermentation broth by adsorption on activated carbon, eluted therefom with a 1% sulfuric acid solution in acetone, and purified over sulfuric acid-washed alumina has antibacterial and growth promotant activity.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: April 20, 1976
    Assignee: Eli Lilly and Company
    Inventors: Robert L. Hamill, William M. Stark, Donald C. DeLong