Patents by Inventor Yu L. An

Yu L. An 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: 5364948
    Abstract: This invention relates to compounds of structural formula (I) isolated from an aerobic fermentation of Trichoderma viride MF5628, ATCC 74084: ##STR1## which are squalene synthase inhibitors and thus useful as cholesterol lowering agents. These compounds are also potent antifungal agents. Additionally, they inhibit farnesyl protein transferase and farnesylation of the oncogene protein Ras and are thus useful in treating cancer. This invention also relates to a process for obtaining compounds of structural formula (I).
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: November 15, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Guy H. Harris, Deborah Zink, E. Tracy T. Jones, Yu L. Kong
  • Patent number: 5363844
    Abstract: In an NMR system a respiration monitor provides a visual feedback to the patient which enables the patient to perform a series of breath-holds with the patient's diaphragm positioned at the same reference point. This enables NMR data to be acquired over a series of breath-holds without introducing blurring or image artifacts. Between breath-holds a navigator pulse sequence is used to gather NMR data from which diaphragm position is measured, and during each breath-hold the pulse sequence is changed to gather NMR image data.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: November 15, 1994
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Stephen J. Riederer, Yu L. Liu, Richard L. Ehman
  • Patent number: 5352800
    Abstract: Fermentation processes for the production of a compound of the Structural Formula I ##STR1## The compound of Structural Formula I has been shown to have endothelin antagonist activity and is therefore useful in treating cardiovascular disorders, such as hypertension, congestive heart failure, postischemic renal failure vasospasm, cerebral and cardia ischemia, myocardial infarction inflammatory diseases, Raynaud's disease, endotoxin shock and asthma.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: October 4, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Gerard F. Bills, Michael A. Goetz, Robert A. Giacobbe, Lucia Herranz, E. Tracy Turner Jones, Fernando Pelaez, Yu L. Kong, Sheo B. Singh, Siobhan Stevens-Miles
  • Patent number: 5290804
    Abstract: There is disclosed a series of macrolides isolated from the fermentation broth of microorganisms identified as MA-6825, MA-6864 and MA-6865. The structure of the novel compounds isolated from the microorganisms is presented based upon analytical studies. The compounds are highly potent antiparasitic, insecticidal, and anthelmintic agents and are related to the class of macrolides known as milbemycins. Compositions for such uses are also disclosed.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: March 1, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Robert T. Goegelman, Elvira Munguira, Maria T. Diez Matas, Ruth S. Sykes, Yu L. Kong, Jerrold M. Liesch, Gregory L. Helms, E. Tracy Turner Jones
  • Patent number: 5283256
    Abstract: This invention relates to compounds of structural formula (I): ##STR1## which are squalene synthase inhibitors and thus useful as cholesterol lowering agents and antifungal agents. These compounds are also inhibitors of farnesyl protein transferase and farnesylation of the oncogene protein Ras and thus useful in treating cancer. This invention also relates to a process for obtaining compounds of structural formula (I).
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: February 1, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Claude Dufresne, Josep Guarro, Leeyuan Huang, Yu L. Kong, Russell B. Lingham, Maria S. Meinz, Keith C. Silverman, Sheo B. Singh
  • Patent number: 5276054
    Abstract: Substituted hexahydrobenzopyran derivatives of the Formulae A, B, or C are useful as angiotensin II antagonists: ##STR1##
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: January 4, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Maria T. Diez, Michael A. Goetz, Robert A. Giacobbe, Otto D. Hensens, Leeyan Huang, Isabel Martin, E. Tracy T. Jones, Siobhan Stevens-Miles, Yu L. Kong
  • Patent number: 5260215
    Abstract: This invention relates to a fungal microorganism MF5757 (ATCC 74167) isolated from bark discs of Quercus prinus L. (Chestnut Oak) and useful in a fermentation process to form a compound of formula (I): ##STR1## which is a squalene synthetase inhibitor and thus useful as a cholesterol lowering agent.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: November 9, 1993
    Assignee: Merck & Co., Inc.
    Inventors: Wendy H. Clapp, Yu L. Kong, Jon D. Polishook
  • Patent number: 5252951
    Abstract: An advanced user interface for use with a computer system operating on an integrated operating environment. The integrated operating environment allows a plurality of application programs to be running simultaneously, one of which is designated the active application program to which all input data is directed. The advanced user interface allows a user to select among user-friendly input devices to operate any application program according to his individual preferences without change to the application program code. The advanced user interface includes alternate input modules which translate the input signals transmitted from the various input devices into input messages useable by the rest of the interface. The advanced user interface also includes interface profiles which contain mappings of the input messages against corresponding commands useable by the application programs, the integrated operating environment or other modules of the advanced user interface itself.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: October 12, 1993
    Assignee: International Business Machines Corporation
    Inventors: Alan R. Tannenbaum, John M. Zetts, Yu L. An, Gordon W. Arbeitman, Evon C. Greanias, Guy F. Verrier
  • Patent number: 5157384
    Abstract: An advanced user interface for use with a computer system operating on an integrated operating environment. The integrated operating environment allows a plurality of application programs to be running simultaneously, one of which is designated the active application program to which all input data is directed. The advanced user interface allows a user to select among user-friendly input devices to operate any application program according to his individual preferences without change to the application program code. The advanced user interface includes alternate input modules which translate the input signals transmitted from the various input devices into input messages useable by the rest of the interface. The advanced user interface also includes interface profiles which contain mappings of the input messages against corresponding commands useable by the application programs, the integrated operating environment or other modules of the advanced user interface itself.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: October 20, 1992
    Assignee: International Business Machines Corporation
    Inventors: Evon C. Greanias, Guy F. Verrier, Gordon W. Arbeitman, Alan R. Tannenbaum, Yu L. An
  • Patent number: 4981980
    Abstract: Fermentation of a nutrient medium by a Hypomycetes fungus of the genus Memnoniella or Stachybotrys yields a product with a major component of structural formula I: ##STR1## which is an inositol monophosphate phosphatase inhibitor and thereby useful in the treatment of manic depression.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: January 1, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Robert A. Giocobbe, Leeyuan Huang, Yu L. Kong, Yiu-Kuen T. Lam, Sagrario M. Del Val, Carol F. Wichmann, Deborah L. Zink
  • Patent number: 4222934
    Abstract: Methods for the large scale preparation of clinical albumin are disclosed. One method includes dilution of plasma with a NaCl solution containing disodium ethylene dinitrilo tetraacetate and a stabilizer such as sodium caprylate. The resulting solution is then subjected to heating and cooling steps, followed by the addition of polyethylene glycol to precipitate impurities, with albumin remaining in the supernatant. Isoelectric precipitation is then employed to recover the desired albumin product, which is devoid of the albumin dimer. In an alternative method, ethanol is employed as the precipitating agent rather than polyethylene glycol.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: September 16, 1980
    Assignee: American National Red Cross
    Inventor: Yu L. Hao
  • Patent number: 4164496
    Abstract: Methods for the large scale preparation of clinical albumin are disclosed. One method includes dilution of plasma with a NaCl solution containing disodium ethylene dinitrilo tetraacetate and a stabilizer such as sodium caprylate. The resulting solution is then subjected to heating and cooling steps, followed by the addition of polyethylene glycol to precipitate impurities, with albumin remaining in the supernatant. Isoelectric precipitation is then employed to recover the desired albumin product, which is devoid of the albumin dimer. In an alternative method, ethanol is employed as the precipitating agent rather than polyethylene glycol.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: August 14, 1979
    Assignee: American National Red Cross
    Inventor: Yu L. Hao
  • Patent number: D358656
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: May 23, 1995
    Inventor: Yu L. Chang