Patents Represented by Attorney L. Chasan

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  • Benzene sulfonate quaternary ammonium salts of organic sunscreen carboxylic acids
    Patent number: 4680144
    Abstract: Compositions of benzene sulfonate quaternary ammonium salts of organic sunscreen carboxylic acids have substantially for human hair and protect it from the undesirable effects of sunlight.
    Type: Grant
    Filed: October 29, 1986
    Date of Patent: July 14, 1987
    Assignee: Mallinckrodt, Inc.
    Inventor: Donald E. Conner
  • Liquid, cinnamal dialkyl malonates as sole organic sunscreens
    Patent number: 4515774
    Abstract: Non-polar cosmetic oil compositions containing a liquid cinnamal dialkyl malonate are very effective in providing broad spectrum sunscreen protection.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: May 7, 1985
    Assignee: Van Dyk & Company Inc.
    Inventors: Donald E. Conner, Kenneth Klein
  • Dialkyl malonates as organic sunscreen adjuvants
    Patent number: 4457911
    Abstract: Compositions containing an organic sunscreen and particular substituted dialkyl malonates adjuvants therefor are very effective in providing broad spectrum sunscreen protection.
    Type: Grant
    Filed: August 3, 1982
    Date of Patent: July 3, 1984
    Assignee: Van Dyk & Company Inc.
    Inventors: Donald E. Conner, Boris M. Cumpelik
  • Benzene sulfonate quaternary ammonium salts
    Patent number: 4342706
    Abstract: Novel compositions of matter consisting of benzene sulfonate quaternary ammonium salts have been found to be possessed of very good antistatic, emollient and substantive properties. They are prepared by reacting the amide or ester with the requisite sulfonate.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: August 3, 1982
    Assignee: Van Dyk & Company, Inc.
    Inventors: Donald E. Conner, Arnold W. Fogel
  • Benzalphthalides and broad spectrum sun screens
    Patent number: 4333920
    Abstract: Compositions containing a benzalphthalide, i.e. benzalphthalide or a substituted benzalphthalide, are very effective broad spectrum sun screens. They are prepared by reacting substituted or unsubstituted phthalic anhydride with the corresponding substituted or unsubstituted phenyl acetic acid.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: June 8, 1982
    Assignee: Van Dyk & Company, Inc.
    Inventor: Donald E. Conner