Nitrogen Bonded Directly At The 2-, 3-, 5- Or 6- Position Patents (Class 552/306)
  • Particular quinone direct dyes, dye composition comprising at least one such dye, implementation process therefor and use thereof
    Patent number: 9233057
    Abstract: The present invention relates to quinone direct dyes of formula (I) below, organic or mineral acid or base salts thereof, tautomeric forms, optical isomers or geometrical isomers thereof and/or solvates thereof: and also to the use thereof for dyeing keratin fibers, in particular human keratin fibers such as the hair. The invention also relates to a composition for dyeing keratin fibers, comprising such direct dyes in a suitable dyeing medium. Similarly, a subject of the present invention is a process for dyeing keratin fibers, using the said dye composition.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 12, 2016
    Assignee: L'OREAL
    Inventor: Stephane Sabelle
  • Polycyclic aryl and heteroaryl substituted 1,4-quinones useful for selective inhibition of the coagulation cascade
    Patent number: 6686484
    Abstract: The invention relates to polycyclic aryl and heteroaryl substituted 1,4-quinone compounds useful as inhibitors of serine proteases of the coagulation cascade and compounds, compositions and methods for anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular diseases.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: February 3, 2004
    Assignee: Pharmacia Corporation
    Inventors: Michael S. South, John J. Parlow
  • Amino-quinones, and their use in providing corrosion resistance to metals
    Patent number: 5596098
    Abstract: Aminoquinones and their use as additives in fluid media for providing corrosion resistance to metals in contact with the fluid medium and their use in preparing copolymers to provide corrosion resistant binder compositions for magnetic information storage media, the copolymers formed, the magnetic information storage media and a method for improving corrosion resistance in magnetic particles are provided.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: January 21, 1997
    Assignee: University of Alabama
    Inventors: David E. Nikles, Jeng-Li Liang
  • Benzoquinone compounds
    Patent number: 5283355
    Abstract: Compounds of the Formula (5) and processes for their preparation and use, particularly in the manufacture of unsymmetrical triphenodioxazine dyes: ##STR1## wherein: Y is H, alkyl, substituted alkyl, alkoxy, Cl or Br;R is a group of Formula (3) ##STR2## R.sup.1 and R.sup.2 are each independently alkyl, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form an optionally substituted 4, 5 or 6 membered alicyclic or heterocyclic ring;R.sup.3 is H;Z is Cl, Br or A--NH; andA is H or the residue of a primary amine.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: February 1, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventor: William J. E. Norris
  • 1,4-benzoquinone derivatives and benzene derivatives, and process for preparing the same
    Patent number: 5220042
    Abstract: 1,4-Benzoquinone derivatives and benzene derivatives having cerebral- and cardiac-blood flow improving activities and preventive activities of cerebral ischema with low toxicities, and thus are useful as activators for cardiac and cebral metabolisms, curing agents for heart failure, cardiac and cerebral blood flow improving agents, as well as anti-allergic agents for slow reacting allergy (IV-type allergy).
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: June 15, 1993
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Hideyuki Iwaki, Yoshiyasu Fukuyama, Kuniaki Matsui
  • Benzoquinone antiallergy and antinflammatory agents
    Patent number: 5104874
    Abstract: A series of 2-amino-5,6-dimethyl-1,4-benzoquinone derivatives, inhibitors of cyclooxygenase and lipoxygenase and useful as antiallergic and antiinflammatory agents.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: April 14, 1992
    Assignee: Pfizer Inc.
    Inventors: Takafumi Ikeda, Hiroaki Wakabayashi, Masami Nakane