Patents Represented by Law Firm Dike, Bronstein
  • Substituted carbonyl compounds
    Patent number: 4039556
    Abstract: Fluorenone and anthraquinone compounds substituted by at least one tetrazolyl group in one ring, and further substituted in the other ring, optionally for the fluorenones, have antiallergic activity.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: August 2, 1977
    Assignee: Burroughs Wellcome Co.
    Inventors: Harold Francis Hodson, John Frederick Batchelor
  • Pharmaceutical compositions containing pteridines
    Patent number: 4036961
    Abstract: Pharmaceutical compositions containing the pteridines of formula (I), ##STR1## wherein R is a lower alkyl group, substituted with one or more halogen atoms, and R.sup.1 and R.sup.2 are the same or different and each is a lower alkyl group or R.sup.1 and R.sup.2, together with the carbon atom in the pteridine ring structure, form a spirocycloalkyl ring system having 4 to 6 carbon atoms outside the pteridine ring structure.The above compositions have bacteriostatic activity.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: July 19, 1977
    Assignee: Burroughs Wellcome Co.
    Inventor: Alexander Stuart
  • Quaternary ammonium compounds useful as antifibrillatory agent
    Patent number: 4001433
    Abstract: Compounds containing the N-m-methoxybenzyl-N,N-dimethyl-N-2-hydroxyethylammonium cation and non-toxic salts of the N-m-methoxybenzyl-N,N-dimethyl-N-ethylammonium cation.The compounds have antiarrhythmic properties, and are useful specifically as antifibrillatory agents.
    Type: Grant
    Filed: April 1, 1974
    Date of Patent: January 4, 1977
    Assignee: Burroughs Wellcome Co.
    Inventors: Robert Arthur Maxwell, Frederick Charles Copp
  • Filtration apparatus
    Patent number: 3993564
    Abstract: Apparatus for filtering particulate matter in a fluid (e.g., gas) and in particular small particulate matter, the apparatus including a rotating filter, an expander or turbine for extracting energy from the fluid after the fluid has passed through the filter, an aerodynamic seal comprising a rotating multiple fin or vane member which rotates with the filter and expander, and depending upon the type of particulate matter, there is provided a spray system or a scrubbing system to aid in filtering the particulate matter.
    Type: Grant
    Filed: January 23, 1974
    Date of Patent: November 23, 1976
    Assignee: Advanced Product Engineering Corporation
    Inventor: Richard A. Novak