Patents by Inventor Richard A. Appleton

Richard A. Appleton 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).

  • Patent number: 5428044
    Abstract: There are disclosed compounds of the formula (I): ##STR1## in which the variables R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and X are defined in the specification. The compounds are useful as pharmaceuticals, especially as anti-inflammatory agents.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: June 27, 1995
    Assignee: Fisons plc
    Inventors: John R. Bantick, David N. Hardern, Richard A. Appleton, John Dixon, David J. Wilkinson
  • Patent number: 4810719
    Abstract: There are described compounds of formula I, ##STR1## in which either R.sub.2 represents hydrogen, alkyl or Ar.sub.2, andR.sub.3 represents hydrogen, alkyl or alkyl substituted by Ar.sub.3 ;or R.sub.2 and R.sub.3 together form the chain --(CH.sub.2).sub.m --;R.sub.4 and R.sub.5, which may be the same or different, each independently represent hydrogen, halogen, Ar, alkyl, or alkyl substituted by Ar,Ar.sub.1, Ar.sub.2 and Ar, which may be the same or different each independently represent aryl or aryl substituted by one or more ofhalogen, hydroxy, --CN, --COR.sub.6, trihalomethyl, alkoxy, alkoxy substituted by --COR.sub.6, alkoxy substituted by --NR.sub.7 R.sub.8, alkyl, alkyl substituted by --COR.sub.6, alkyl substituted by NR.sub.7 R.sub.8, alkoxy substituted by Ar.sub.3, S(O).sub.n R.sub.9, --NR.sub.7 R.sub.8 or OAr.sub.3 ;R.sub.6 represents --OR.sub.10, --NR.sub.7 R.sub.8, hydrogen or alkyl;R.sub.7 and R.sub.8, which may be the same or different, each independently represent hydrogen, alkyl, alkanoyl or Ar.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: March 7, 1989
    Assignee: Fisons plc
    Inventors: Richard A. Appleton, Sidney C. Burford, David N. Hardern, David Wilkinson
  • Patent number: 4803216
    Abstract: There are described compounds of formula I, ##STR1## in which R.sub.1 represents hydrogen, alkyl, alkanoyl or alkyl substituted by Ar.sub.1,R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, each independently represent hydrogen, alkyl or Ar.sub.3,Ar.sub.1, Ar.sub.2 and Ar.sub.3, which may be the same or different, independently represent phenyl or phenyl substituted by one or more of alkyl, hydroxy, alkoxy, NR.sub.6 R.sub.7 or halogen,R.sub.6 and R.sub.7, which may be the same or different, independently represent hydrogen or alkyl,and pharmaceutically acceptable acid addition salts thereof.Compositions containing the compounds and methods for their preparation are also described.The compounds are indicated for use as pharmaceutical, e.g. anti-inflammatory, agents.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: February 7, 1989
    Assignee: Fisons plc
    Inventors: Richard A. Appleton, John Dixon, Sidney C. Burford
  • Patent number: 4296114
    Abstract: There are described compounds of formula I, ##STR1## in which R.sub.1 is phenyl substituted by halogen, alkoxy, alkyl, carboxy-alkyl, --NR.sub.4 R.sub.5, carboxy or alkoxy carbonyl,R.sub.3 is hydrogen, alkyl, mono- or di-carboxy alkyl, halo, alkoxy, phenyl, halo-phenyl, hydroxy, phenoxy, thiol, thioalkoxy, thiophenoxy, --NR.sub.4 R.sub.5, cyano, --COOH, carboxyureido, --CF.sub.3, --COR.sub.6, hydroxyalkyl, aminoalkyl, or alkoxy substituted by NR.sub.4 R.sub.5,ring A is a benzene or a pyridine ring which optionally carries up to 4 substituents R.sub.3, which may be the same or different,R.sub.4 and R.sub.5, which may be the same or different, each represent hydrogen, phenyl, halophenyl or alkyl, the alkyl optionally being substituted by alkoxy or by a mono- or di-alkyl or unsubstituted amino group; or R.sub.4 and R.sub.5, together with the nitrogen atom to which they are attached, form a piperidine, morpholine or an optionally alkyl substituted piperazine ring, andR.sub.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: October 20, 1981
    Assignee: Fisons Limited
    Inventors: Richard A. Appleton, David Johnston
  • Patent number: 4151179
    Abstract: There are described compounds of formula I, ##STR1## in which Ra is hydrogen, alkyl, alkenyl or phenyl, R.sub.3, R.sub.5, R.sub.7 and R.sub.8, which may be the same or different, are each hydrogen, alkyl, alkoxy, halogen, hydroxy, alkenyl or phenyl,Rx is hydrogen or alkyl,Ry and Rz are both hydrogen, or together represent a carbonyl oxygen atom,Rb and Rc are both hydrogen or together represent a carbon-carbon bond,Provided that when Rx is hydrogen, Ry and Rz together represent a carbonyl oxygen atom and R.sub.5, R.sub.7 and R.sub.8 are all hydrogen then Ra is other than methyl or phenyl,And pharmaceutically acceptable derivatives thereof.There are also described methods for making the compounds and pharmaceutical, e.g. anti-inflammatory, compositions containing the compounds.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: April 24, 1979
    Assignee: Fisons Limited
    Inventors: Richard A. Appleton, Kevan Brown
  • Patent number: D444434
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: July 3, 2001
    Assignee: Crowncrest Services Limited
    Inventor: Richard Appleton