Patents by Inventor Norbert Rigassi

Norbert Rigassi 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).

  • Alkynyloxy-phenyl derivatives
    Patent number: 4138579
    Abstract: Alkynyl, benzyl or phenyl, ethers and esters which are ring substituted with an oxy or a thio aliphatic chain. These ethers and esters are usful in killing and preventing the proliferation of insects by upsetting their hormonal balance.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: February 6, 1979
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar S. Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • Epoxy dodecadienamides
    Patent number: 4059600
    Abstract: Ethers, esters and amides of dodeca-2,4-dien 1-ols or 1-oic acids which have a methyl or ethyl side chain at the 11-position which are useful in killing and preventing proliferation of insects, by upsetting their hormone balance and a process for preparing these ethers, esters and amides including intermediates in this process.
    Type: Grant
    Filed: January 7, 1972
    Date of Patent: November 22, 1977
    Assignee: Hoffmann-La Roche, Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • Alkynyloxy-phenyl derivatives
    Patent number: 4051319
    Abstract: Alkynyl, benzyl or phenyl, ethers and esters which are ring substituted with an oxy or a thio aliphatic chain. These ethers and esters are useful in killing and preventing the proliferation of insects by upsetting their hormonal balance.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: September 27, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • 9[2-(1-Al koxy-ethyl)-5,5-dimethyl-cyclopent-1-en-1-yl]-3,7-dimethyl-nona-2,4,6,8-t etraen acid compounds
    Patent number: 4044051
    Abstract: 9-[2-(1-alkoxy-ethyl)-5,5-dimethyl-cyclopent-1-en-1-yl]-3,7-dimethyl-nona-2 ,4,6,8-tetraen acid compounds are disclosed which are useful for the topical or systemic treatment of dermatological disorders.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: August 23, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Werner Bollag, Norbert Rigassi, Ulrich Schwieter
  • Phenyl derivatives
    Patent number: 4001339
    Abstract: Phenyloxy, phenylsulfinyl, phenylthio, phenylsulfonyl, benzyloxy, benzylthio, benzylsulfinyl, or benzylsulfonyl, alkyl or alkenyl derivatives wherein the alkyl or alkenyl group contains at least 7 carbon atoms which are useful in killing and preventing proliferation of insects by upsetting their hormone balance.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: January 4, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • Alkynyloxy-phenyl derivatives
    Patent number: 3957833
    Abstract: Alkynyl, benzyl or phenyl, ethers and esters which are ring substituted with an oxy or a thio aliphatic chain. These ethers and esters are useful in killing and preventing the proliferation of insects by upsetting their hormonal balance.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: May 18, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • Propynyl benzyl ethers
    Patent number: 3946040
    Abstract: Propynyl benzyl ethers having juvenile hormone-like activity which are 4-halogen, lower alkyl, lower alkoxy or propynyloxy substituted or 3,4-lower alkylenedioxy substituted and which can also be 3,5- and/or .alpha.-substituted, and insecticide compositions that include at least one propynyl benzyl ether and that can also include a conventional insect-poison.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: March 23, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy
  • Phenyl derivatives
    Patent number: 3944531
    Abstract: Phenyloxy, phenylsulfinyl, phenylthio, phenylsulfonyl, benzyloxy, benzylthio, benzylsulfinyl, or benzylsulfonyl, alkyl or alkenyl derivatives wherein the alkyl or alkenyl group contains at least 7 carbon atoms which are useful in killing and preventing proliferation of insects by upsetting their hormone balance.
    Type: Grant
    Filed: April 20, 1970
    Date of Patent: March 16, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Madhukar Subraya Chodnekar, Albert Pfiffner, Norbert Rigassi, Ulrich Schwieter, Milos Suchy