Patents Examined by Vera C. Clarks
  • Preparation of aryl ketones
    Patent number: 5041616
    Abstract: Disclosed is a process for the preparation of alkyl aryl ketones, cycloalkyl aryl ketones and diaryl ketones by contacting an aromatic compound with an aliphatic, cycloaliphatic or aromatic carboxylic acid in the presence of a catalytic amount of an organic sulfonic acid while removing the water of reaction as an azeotrope from the reaction mixture.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: August 20, 1991
    Assignee: Eastman Kodak Company
    Inventor: Charles E. Sumner, Jr.
  • Process for the production of trimellitic acid
    Patent number: 4992579
    Abstract: A process for the manufacture of trimelitic acid from pseudocumene is disclosed. The pseudocumene is oxidized in the presence of a cerium, cobalt, manganese, and optionally zirconium, bromine catalyst wherein all of the cerium is added in the second stage of the oxidation, and wherein most of the bromine is also added during the second oxidation stage. Trimellitic acid is useful in the manufacture of polyester and polyamide-imides.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 12, 1991
    Assignee: Amoco Corporation
    Inventor: Wayne P. Schammel
  • Novel .beta.-lactam antibiotics
    Patent number: 4748163
    Abstract: Antibacterially active and animal growth-promoting novel .beta.-lactam compounds of the formula ##STR1## in which R.sup.1 represents the radical ##STR2## Y representing N or CR.sup.9, or Y--R.sup.7 representing >C.dbd.O or >C.dbd.N--R.sup.7,Z representing O, S, or NR.sup.10, andR.sup.2 represents hydrogen or a protective group.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: May 31, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Schmidt, Hans-Joachim Zeiler, Karl G. Metzger
  • Diphenyl ether, diphenyl thioether and diphenyl methane phenol mannich bases
    Patent number: 4389416
    Abstract: Described are compounds of the formula ##STR1## wherein R is hydrogen, loweralkyl, aminomethyl or halo; R.sub.1 is carboxy, carboxyloweralkyl, aminocarbonyl, hydroxymethyl, anilinomethyl, or aminomethyl; A is oxygen, CH.sub.2, Sulfur or a single bond; X is oxygen, CH.sub.2, sulfur or sulfoxide; and Y is hydrogen, loweralkyl or halo and may be the same or different, and pharmaceutically acceptable salts thereof.The compounds are effective as diuretic agents.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: June 21, 1983
    Assignee: Abbott Laboratories
    Inventor: Jacob J. Plattner
  • Topical application of cis of trans 3,4-thiolanediol to reduce the greasy appearance of hair and skin
    Patent number: 3950532
    Abstract: A composition and method for treating the hair and skin characterized by a greasy, unaesthetic appearance to reduce or essentially eliminate this greasy appearance which includes topically applying to a human having hair or skin so characterized a cosmetic composition containing as an active ingredient a cis or trans 3,4-thiolannediol, its cis or trans S-oxide derivatives or its cis or trans S-dioxide derivatives.
    Type: Grant
    Filed: May 10, 1972
    Date of Patent: April 13, 1976
    Assignee: L'Oreal
    Inventors: Claude Bouillon, Michel Colin