Patents by Inventor Yuhpyng L. Chen

Yuhpyng L. Chen 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).

  • Publication number: 20010000340
    Abstract: A method of treating, preventing or inhibiting a disorder selected from the group consisting of cardiovascular or heart related diseases such as stroke, hypertension, tachycardia, and congestive heart failure, osteoporosis, premature birth, psychosocial dwarfism, stress-induced fever, ulcer, diarrhea, post-operative ileus, and colonic hypersensitivity associated with psychopathological disturbance and stress, comprising administering to a mammal, including a human, in need of such treatment a therapeutically effective amount of a compound of the formula 1
    Type: Application
    Filed: December 13, 2000
    Publication date: April 19, 2001
    Inventors: Yuhpyng L. Chen, Anthony A. Fossa
  • Patent number: 6200979
    Abstract: Substituted pyrrazoles of the formula wherein R1, R2, R3, X, Y, Z and A are as defined herein with reference to formula I; pyrazoles and pyzazolopyrimidines of the formula wherein R1, R2, R3, R4 and A are defined herein with reference to formula VII; compounds of the formula wherein A, R3, R4 and R. are as defined herein with reference to formula VIII; and pyrrolopyzimidines of the formula wherein B1 R3, R4, R5 and R6 are as defined herein, with reference to formula IX, have corticotropin-releasing factor antagonist activity and as such are of use in the treatment of a variety of stress-related disorders.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: March 13, 2001
    Inventors: Gene M. Bright, Yuhpyng L. Chen, Willard M. Welch
  • Patent number: 6051578
    Abstract: This invention relates to the use of pyrazolopyrimidines and pyrrolopyrimidine of, respectively, the general formula ##STR1## wherein A, X, R.sup.3, R.sup.4 and R.sup.5 are as defined below, and the pharmaceutically acceptable salts of such compounds, to treat, prevent or inhibit certain neuronal and other disorders.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: April 18, 2000
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen
  • Patent number: 6043260
    Abstract: This invention relates to method for treating a mammal which presents with heart failure comprising administering to a mammal a therapeutically effective amount of wherein 4-(1-ethyl-propoxy)-3,6-dimethyl-2-(2,4,6-trimethyl-phenoxy)-pyridine and (3,6-dimethyl-2-(2,4,6-trimethyl-phenoxy)-pyridin-4-yl)-(1-ethyl-propyl)-a mine or a pharmaceutically acceptable salt thereof. This invention is also directed to methods of using combinations of those two agents with other congestive heart failure treating compounds to treat congestive heart failure.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: March 28, 2000
    Assignee: Pfizer Inc
    Inventors: Yuhpyng L. Chen, Anthony A. Fossa
  • Patent number: 5750542
    Abstract: Described herein are compounds of the formula ##STR1## wherein R.sup.1 R.sup.2, R.sup.7, R.sup.8, X, Y, M and L are defined as below. The compounds of formula I are cholinesterase inhibitors and are useful in enhancing memory in patients suffering from dementia and Alzheimer's disease.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: May 12, 1998
    Assignee: Pfizer
    Inventors: Anabella Villalobos, Arthur A. Nagel, Yuhpyng L. Chen
  • Patent number: 5646152
    Abstract: Compounds of the formula ##STR1## wherein B, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are as defined herein with reference to formula IX have corticotropin-releasing factor antagonist activity and as such are of use in the treatment of panics, phobias and other stress-related disorders.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: July 8, 1997
    Assignee: Pfizer Inc.
    Inventors: Gene M. Bright, Yuhpyng L. Chen, Willard M. Welch
  • Patent number: 5594002
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: January 14, 1997
    Assignee: Pfizer Inc
    Inventor: Yuhpyng L. Chen
  • Patent number: 5574046
    Abstract: Compounds of the formula ##STR1## wherein ring A, ring B, ring D, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.11, R.sup.12, R.sup.13, E, G, X and P are as defined below. The compounds of formula I are cholinesterase inhibitors and are useful in enhancing memory in patients suffering from dementia and Alzheimer's disease.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: November 12, 1996
    Assignee: Pfizer Inc.
    Inventors: Yuhpyng L. Chen, Arthur A. Nagel
  • Patent number: 5538984
    Abstract: Disclosed herein are compounds of the formula ##STR1## wherein R.sup.1 R.sup.2, R.sup.7, R.sup.8, X, Y, M and L are defined as below The compounds of formula I are cholinesterase inhibitors and are useful in enhancing memory in patients suffering from dementia and Alzheimer's disease.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 23, 1996
    Assignee: Pfizer Inc.
    Inventors: Anabella Villalobos, Arthur A. Nagel, Yuhpyng L. Chen
  • Patent number: 5428043
    Abstract: Compounds of the formula ##STR1## wherein ring A, ring B, ring D, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6,R.sup.11, R.sup.12, R.sup.13, E, G, X and P are as defined below. The compounds of formula I are cholinesterase inhibitors and are useful in enhancing memory in patients suffering from dementia and Alzheimer's disease.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: June 27, 1995
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen
  • Patent number: 5387590
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, m, n, o, p, q and r are as defined below. The compounds are memory enhancing cholinesterase inhibitors useful in enhancing memory, novel intermediates used in their synthesis, and analgesic agents.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: February 7, 1995
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen
  • Patent number: 5015473
    Abstract: Beta-lactamase inhibiting compounds of the formula ##STR1## or a pharmaceutically acceptable acid addition or carboxylate salt thereof; where n is zero, 1 or 2; X.sub.3 is H or Br, R.sup.1 is H, the residue of certain carboxy-protecting groups or the residue of an ester group readily hydrolyzable in vivo; one of R.sup.12 and R.sup.13 is H and the other is vinyl, certain aryl, alkylthio, alkylsulfonyl or certain heterocyclyl, aminomethyl, thiocarboxyamido or amidino groups; one of R.sup.2 and R.sup.3 is H and the other is as disclosed for the other of R.sup.12 and R.sup.13, or is Cl or CH.sub.2 OH, and R.sup.18 is H or certain acyl groups; intermediates useful in their production, methods for their preparation and use, and pharmaceutical compositions containing them.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 14, 1991
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen
  • Patent number: 4826833
    Abstract: Beta-lactamase inhibiting compounds of the formula ##STR1## or a pharmaceutically acceptable acid addition or carboxylate salt thereof; where n is zero, 1 or 2; X.sub.3 is H or Br, R.sup.1 is H, the residue of certain carboxy-protecting groups or the residue of an ester group readily hydrolyzable in vivo; one of R.sup.12 and R.sup.13 is H and the other is vinyl, certain aryl, alkylthio, alkylsulfonyl or certain heterocyclyl, aminomethyl, thiocarboxamido or amidino groups; one or R.sup.2 and R.sup.3 is H and the other is as disclosed for the other of R.sup.12 and R.sup.13, or is Cl or CH.sub.2 OH, and R.sup.18 is H or certain acyl groups; intermediates useful in their production, methods for their preparation and use, and pharmaceutical compositions containing them.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: May 2, 1989
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen
  • Patent number: 4782050
    Abstract: Antibacterial penicillins of the formula ##STR1## or a pharmaceutically acceptable salt thereof wherein R.sup.1 is a heterocyclic group and R is hydrogen, the residue of certian carboxy protecting groups or the residue of an ester group readily hydrolyzable in vivo having activity against resistant organisms.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: November 1, 1988
    Assignee: Pfizer Inc.
    Inventor: Yuhpyng L. Chen