Patents by Inventor Lin Hua

Lin Hua 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: 20030166930
    Abstract: Disclosed are novel processes and novel intermediate compounds for preparing aryl- and heteroaryl-substituted urea compounds of the formula(I) wherein Ar1, Ar2, L, Q and X are described herein. The product compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 4, 2003
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Lin-Hua Zhang, Lei Zhu
  • Publication number: 20030166931
    Abstract: Disclosed are novel processes and novel intermediate compounds for preparing aryl-and heteroaryl-substituted urea compounds of the formula(I) wherein Ar1, Ar2, L, Q and X are described herein. The product compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 4, 2003
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Lin-Hua Zhang, Lei Zhu
  • Patent number: 6583282
    Abstract: Disclosed are novel processes and novel intermediate compounds for preparing aryl- and heteroaryl-substituted urea compounds of the formula (I) wherein Ar1, Ar2, L, Q and X are described herein. The product compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: June 24, 2003
    Assignee: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Lin-Hua Zhang, Lei Zhu
  • Publication number: 20030109703
    Abstract: Disclosed are processes, polymorph and intermediate compounds for preparing aryl- and heteroaryl-substituted urea compounds of the formula(I) wherein Ar1, Ar2, L, Q and X are described herein. The product compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases.
    Type: Application
    Filed: November 20, 2002
    Publication date: June 12, 2003
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Lin-Hua Zhang, Lei Zhu
  • Publication number: 20020058678
    Abstract: Disclosed are novel aromatic heterocyclic compounds of the formula(I) wherein Ar1, Ar2, L, Q and X are described herein. The compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases. Also disclosed are processes of making such compounds.
    Type: Application
    Filed: June 12, 2001
    Publication date: May 16, 2002
    Inventors: Pier F. Cirillo, Thomas A. Gilmore, Eugene R. Hickey, John R. Regan, Lin-Hua Zhang
  • Patent number: 6333325
    Abstract: Disclosed are novel aromatic heterocyclic compounds of the formula(I) wherein Ar1,Ar2,L,Q and X are described herein. The compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases. Also disclosed are processes of making such compounds.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: December 25, 2001
    Assignee: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Pier F. Cirillo, Thomas A. Gilmore, Eugene R. Hickey, John R. Regan, Lin-Hua Zhang
  • Patent number: 6319921
    Abstract: Disclosed are novel aromatic heterocyclic compounds of the formula (I) wherein Ar1, Ar2, L, Q and X are described herein. The compounds are useful in pharmaceutic compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases. Also disclosed are processes of making such compounds.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: November 20, 2001
    Assignee: Boerhinger Ingelheim Pharmaceuticals, Inc.
    Inventors: Pier F. Cirillo, Thomas A. Gilmore, Eugene R. Hickey, John R. Regan, Lin-Hua Zhang
  • Patent number: 6306886
    Abstract: The potent platelet glycoprotein IIb/IIIa antagonist, roxifiban, is produced in crystalline form. Crystalline roxifiban exists in two polymorphic forms, designated Form 1 and Form 2. These polymorphic forms are characterized by x-ray powder diffraction and solid-state carbon NMR. Pharmaceutical compositions and methods for the treatment or prevention of diseases mediated by platelet aggregation are described.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: October 23, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Michael Blaise Maurin, Philip Ma, David John Meloni, Jaan A. Pesti, Lucius Thomas Rossano, Randall K. Ward, Jianguo Yin, Lin Hua Zhang, Goss S. Kauffman
  • Patent number: 6242453
    Abstract: Disclosed are novel aromatic polycyclo heterocyclic compounds of the formula(I) wherein A, B, C, G, Ar, L, Q and X are described herein. The compounds are useful in pharmaceutical compositions for treating diseases or pathological conditions involving inflammation such as chronic inflammatory disease. Also disclosed are processes of making such compounds.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: June 5, 2001
    Assignee: Boehringer Ingelheim Pharmaceuticals, Inc
    Inventors: Pier F. Cirillo, Eugene R. Hickey, John R. Regan, Lin-Hua Zhang
  • Patent number: 6022977
    Abstract: The present invention relates generally to a novel method for preparation of substituted isoxazolin-5-yl acetic acid in high optical purity from a stereoisomeric mixture of an esterified substituted isoxazolin-5-yl acetate. The products are useful in the synthesis of compounds for pharmaceuticals, especially the treatment of thrombolytic disorders, and agricultural products.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: February 8, 2000
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Lin-Hua Zhang, Luigi Anzalone, Jaan A. Pesti, Jianguo Yin
  • Patent number: 5817749
    Abstract: This invention provides processes for the synthesis of platelet glycoprotein IIb/IIIa inhibitors and intermediate compounds useful in said processes.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: October 6, 1998
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Lin-Hua Zhang, Philip Ma, William Frank DeGrado
  • Patent number: 5618944
    Abstract: This invention relates to compounds, including 5-chloro-2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-7-[2,4,6-trimethylphen yl)methoxy]anthra[1,9-cd]pyrazol-6(2H)-one and analogs thereof, which are useful as intermediates for the synthesis of anthrapyrazolone anticancer agents, including losoxantrone. This invention also relates to methods for the synthesis of anthrapyrazolone anticancer agents, including losoxantrone.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: April 8, 1997
    Assignee: The DuPont Merck Pharmaceutical Company
    Inventors: Lin-Hua Zhang, Joseph Auerbach
  • Patent number: 5560250
    Abstract: A variable speed mechanism includes a drive shaft, a plurality of drive gears each fixedly mounted around the drive shaft, a plurality of driven gears each respectively meshing with a corresponding one of the drive gears, a plurality of single direction needle bearings each fixedly mounted in a corresponding one of the plurality of driven gears, a driven shaft mounted in the plurality of single direction needle bearings, an elongated sleeve slidably mounted around the driven shaft, the elongated sleeve being slidable on the driven shaft between a first position where an enlarged free end thereof is fitted into a corresponding one of the single direction needle bearings such that the elongated sleeve is rotated by the associated driven gear, thereby rotating the driven shaft therewith, and a second position where the enlarged free end thereof is not in contact with any one of the single direction needle bearings such that the elongated sleeve and the driven gear stop rotating, a rack slidably mounted in parall
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: October 1, 1996
    Inventor: Jung-Lin Hua
  • Patent number: 5487442
    Abstract: A transmission apparatus is used in an electrical bicycle which includes a power switch, a rear wheel and a hub in the rear wheel. The transmission apparatus of the electrical bicycle includes an upper transmission set including a speed-reducing motor connected to a drive gear which is meshed to a driven gear, a middle transmission set including an upper rod, a lower rod, and a universal joint connected therebetween, where the upper rod is connected to the driven gear, and a lower transmission set including a first bevel gear extended from the lower rod, a second bevel gear meshing with the first bevel gear, a tube extended from the second bevel gear and received in the hub of the rear wheel, and at least one unidirectional needle bearing positioned between the hub and the extended tube allowing the extended tube to drive the hub to rotate thus moving the rear wheel forward yet not allowing the hub to drive the extended tube to rotate.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: January 30, 1996
    Inventor: Jung-Lin Hua
  • Patent number: 5393886
    Abstract: This invention relates to compounds, including 5-chloro-2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-7-[2,4,6-trimethylphen yl)methoxy]anthra[1,9-cd]pyrazol-6(2H)-one and analogs thereof, which are useful as intermediates for the synthesis of anthrapyrazolone anticancer agents, including losoxantrone. This invention also relates to methods for the synthesis of anthrapyrazolone anticancer agents, including losoxantrone.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: February 28, 1995
    Assignee: The Du Pont Merck Pharmaceutical Company
    Inventors: Lin-Hua Zhang, Joseph Auerbach