Patents by Inventor Joseph Mayer

Joseph Mayer 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).

  • Method of introducing an additive into a fluid system, especially useful for leak detection, as well as an apparatus for leak detection and a composition useful for leak detection
    Patent number: 6170320
    Abstract: An additive is introduced into a fluid system and dissolved in a carrier fluid which is immiscible or slightly miscible in the fluid system, wherein the carrier fluid is subsequently removed from the fluid system. This method can be used to detect leaks, wherein an on-off UV light source, such as xenon light, can be used to detect the leak visually.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: January 9, 2001
    Assignee: Mainstream Engineering Corporation
    Inventors: Robert P. Scaringe, Lawrence R. Grzyll, Dwight D. Back, Joseph Mayer
  • Plasma etchant mixture
    Patent number: 4473435
    Abstract: Method and apparatus for masked etching of a polysilicon surface layer or film to expose a dielectric underlying layer or film on a semiconductor material using ion bombardment from an ionized mixture of a fluorine based gas with a chlorine or bromine containing gas. A particularly useful gas is a mixture of sulfur hexafluoride and Freon 115 gases (C.sub.2 ClF.sub.5). The mixture of gases achieves the result of highly selective etching through the polysilicon film without significantly attacking the underlying dielectric film and without significant undercutting in the polysilicon film or etching of the masking layer.
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: September 25, 1984
    Assignee: Drytek
    Inventors: Arthur W. Zafiropoulo, Joseph A. Mayer, Jr.
  • Benzodiazepine intermediates
    Patent number: 4312996
    Abstract: A compound of the formula ##STR1## wherein X and Y are independently selected from hydrogen, halogen, trifluoromethyl, nitro, C.sub.1 to C.sub.6 alkyl and C.sub.1 to C.sub.6 alkoxy, and Z is C.sub.1 to C.sub.6 alkyl or hydrogen is disclosed.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 26, 1982
    Assignee: Schering Corporation
    Inventors: Joseph Mayer, Lydia Peer, Esther Babad
  • Process for nitrating anilides
    Patent number: 4302599
    Abstract: This invention describes a novel process whereby meta-substituted anilides are nitrated in the para position in high yields.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: November 24, 1981
    Assignee: Schering Corporation
    Inventors: Lydia Peer, Joseph Mayer
  • Process for preparing 1-aminonaphthyridines
    Patent number: 4260759
    Abstract: This invention relates to 1-amino naphthyridines prepared by a base-catalyzed condensation while in an aprotic solvent. In this condensation an o-alkyl aryl nitrile may be reacted either with the same or different o-alkyl aryl nitrile or with another nitrile. The 1-amino naphthyridines are useful as antifungal and antibacterial agents.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: April 7, 1981
    Assignee: Schering-Corporation
    Inventors: Joseph Mayer, Margaret H. Sherlock
  • 1-Aminonaphthyridines
    Patent number: 4115395
    Abstract: This invention relates to 1-amino naphthyridines prepared by a base-catalyzed condensation while in an aprotic solvent. In this condensation an o-alkyl aryl nitrile may be reacted either with the same or different o-alkyl aryl nitrile or with another nitrile. The 1-amino naphthyridines are useful as antifungal and antibacterial agents.
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: September 19, 1978
    Assignee: Schering Corporation
    Inventors: Joseph Mayer, Margaret H. Sherlock
  • Certain amino naphthyridines
    Patent number: 4107166
    Abstract: This invention relates to 1-amino naphthyridines prepared by a base-catalyzed condensation while in an aprotic solvent. In this condensation an o-alkyl aryl nitrile may be reacted either with the same or different o-alkyl aryl nitrile or with another nitrile. The 1-amino naphthyridines are useful as antifungal and antibacterial agents.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: August 15, 1978
    Assignee: Schering Corporation
    Inventors: Joseph Mayer, Margaret H. Sherlock
  • Process for preparing 2-halogeno nicotinic acids
    Patent number: 4081451
    Abstract: This invention relates to a novel process for preparing 2-halogeno-nicotinic acids. The compounds, especially 2-chloro-nicotinic acid, are intermediates in the preparation of anilino nicotinic acid derivatives. The latter compounds are useful as analgesic anti-diarrheal and anti-inflammatory agents.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: March 28, 1978
    Assignee: Schering Corporation
    Inventor: Joseph Mayer
  • Certain 8-amino-1,7-naphthyridines
    Patent number: 4017500
    Abstract: This invention relates to 1-amino naphthyridines prepared by a base-catalyzed condensation while in an aprotic solvent. In this condensation an o-alkyl aryl nitrile may be reacted either with the same or different o-alkyl aryl nitrile or with another nitrile. The 1-amino naphthyridines are useful as antifungal and antibacterial agents.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: April 12, 1977
    Assignee: Schering Corporation
    Inventors: Joseph Mayer, Margaret H. Sherlock