Patents by Inventor Tianbao Lu

Tianbao Lu 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: 20040047790
    Abstract: The present invention relates to a method of preparing wet process phosphoric acid, which comprises: dividing raw materials which contain phosphate rock slurry and sulfuric acid into two parts, and then feeding these two parts into two reactors separately. In the first reactor, feeding 70-90 wt. % of the total amount of the slurry and sulfuric acid, in which the ratio of phosphate rock slurry to sulfuric acid to recycled phosphoric acid is set to be 1:0.6˜0.8:1.0˜2.5. 10˜30% of the reaction solution directly flows into conversion cell, participating in the conversion reaction of dihydrate gypsum. Thus resulted phosphoric acid concentration is 33˜39 wt. %. The recovery efficiency of P2O5 is 99% or more. When putting coke powders in the conversion solution as filter aid, the filtration efficiency can be improved by 10˜30%, and in so produced hemihydrate gypsum, P2O5 is 0.05˜0.2%, water of hydration is 4˜8%.
    Type: Application
    Filed: July 18, 2003
    Publication date: March 11, 2004
    Inventors: Yisheng Feng, Jiutian Feng, Xigang Liu, Yurui Wang, Tianbao Lu
  • Publication number: 20040002539
    Abstract: Aminoguanidine and alkoxyguanidine compounds, including compounds of the formula: 1
    Type: Application
    Filed: April 22, 2003
    Publication date: January 1, 2004
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Bruce E. Tomczuk, Richard M. Soll, Tianbao Lu, Cynthia L. Fedde, Carl R. Illig, Thomas P. Markotan
  • Publication number: 20030225115
    Abstract: Aminoguanidine and alkoxyguanidine compounds are described, including compounds of the Formula VII: 1
    Type: Application
    Filed: March 27, 2003
    Publication date: December 4, 2003
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Colleen Siedem
  • Patent number: 6638931
    Abstract: Aminoguanidine and alkoxyguanidine compounds, including compounds of the formula: wherein X is O or NR9 and R1-R4, R6-R9, R11, R12, Ra, Rb, Rc, Y, Z, n and m are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin are described. Also described are methods for preparing the compounds of Formula I. The novel compounds of the present invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin, or are intermediates useful for forming compounds having antithrombotic activity.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: October 28, 2003
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Bruce E. Tomczuk, Richard M. Soll, Tianbao Lu, Cynthia L. Fedde, Carl R. Illig, Thomas P. Markotan, Thomas P. Stagnaro
  • Patent number: 6635637
    Abstract: Cyclic oxyguanidine compounds, including compounds of Formulae I and II: wherein R1, R3-R6, R21-R26, L, Y, Z, and A are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin are described. Also described are methods for preparing the compounds of Formulae I and II. The novel compounds of the present invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin, or are intermediates useful for forming compounds having antithrombotic activity.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: October 21, 2003
    Assignee: Dimensional Pharmaceuticals, Inc.
    Inventors: Aihua Wang, Tianbao Lu, Bruce Edward Tomczuk, Richard M. Soll, John Curtis Spurlino, Roger Francis Bone
  • Publication number: 20030158252
    Abstract: Aminoguanidine and alkoxyguanidine compounds, including compounds of the formula: 1
    Type: Application
    Filed: February 6, 2003
    Publication date: August 21, 2003
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Bruce E. Tomczuk, Richard M. Soll, Tianbao Lu, Cynthia L. Fedde, Carl R. Illig, Thomas P. Markotan, Thomas P. Stagnaro
  • Publication number: 20030109518
    Abstract: The present invention is directed to novel 1,4-benzodiazepines, pharmaceutical compositions thereof, and the use thereof as inhibitors of HDM2-p53 interactions.
    Type: Application
    Filed: November 13, 2002
    Publication date: June 12, 2003
    Inventors: Tianbao Lu, Louis V. Lafrance, Daniel J. Parks, Karen L. Milkiewicz, Raul R. Calvo, Maxwell D. Cummings, Alexander J. Kim, Bruce L. Grasberger, Theodore E. Carver
  • Patent number: 6566379
    Abstract: Aminoguanidine and alkoxyguanidine compounds are described, including compounds of the Formula VII: wherein X is O or NR9 and Het, R1, R7, R8, R12-R15, Ra, Rb, Rc, Z, and n are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin. Also described are methods for preparing such compounds. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin. The invention includes a composition for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal, comprising a compound of the invention in a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: May 20, 2003
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Colleen Siedem
  • Publication number: 20030087921
    Abstract: Aminoguanidine and alkoxyguanidine compounds are described, including compounds of the Formula VII: 1
    Type: Application
    Filed: September 12, 2002
    Publication date: May 8, 2003
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Colleen Siedem
  • Publication number: 20030073702
    Abstract: Cyclic oxyguanidine pyrazinone compounds are described, including compounds of the Formula I: 1
    Type: Application
    Filed: October 4, 2002
    Publication date: April 17, 2003
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Aihua Wang, Bruce Edward Tomczuk, Tianbao Lu, Richard M. Soll, John Curtis Spurlino, Roger Francis Bone
  • Publication number: 20030073833
    Abstract: Phenyl acetamide compounds are described, including compounds of Formula I: 1
    Type: Application
    Filed: October 3, 2002
    Publication date: April 17, 2003
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Wenxi Pan, Tianbao Lu, Thomas P. Markotan, Bruce E. Tomczuk
  • Patent number: 6521663
    Abstract: Phenyl acetamide compounds are described, including compounds of Formula I: or a solvate, hydrate or pharmaceutically acceptable salt thereof; wherein R3-R6, R11, B, Y and W are set forth in the specification. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as thrombin and factor Xa. Compositions for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation are described. Other uses of compounds of the invention are as anticoagulants either embedded in or physically linked to materials used in the manufacture of devices used in blood collection, blood circulation, and blood storage, such as catheters, blood dialysis machines, blood collection syringes and tubes, blood lines and stents. Additionally, the compounds can be detectably labeled and employed for in vivo imaging of thrombi.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: February 18, 2003
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Wenxi Pan, Tianbao Lu, Thomas P. Markotan, Bruce E. Tomczuk
  • Patent number: 6518310
    Abstract: Aminoguanidine and alkoxyguanidine compounds, including compounds of the formula: wherein X is O or NR9 and R1-R4, R6-R9, R11, R12, Ra, Rb, Rc, Y, Z, n and m are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin are described. Also described are methods for preparing the compounds of Formula I. The novel compounds of the present invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin, or are intermediates useful for forming compounds having antithrombotic activity.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: February 11, 2003
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Bruce E. Tomczuk, Richard M. Soll, Tianbao Lu, Cynthia L Fedde, Carl R Illig, Thomas P. Markotan, Thomas P Stagnaro
  • Patent number: 6514978
    Abstract: Thromboresistant materials are described which incorporate pyrazinone compounds of the Formula I: wherein X is O, NR11 or CH═N, R3-R11, Ra, Rb, Rc, W, m, and n are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin. Compositions for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation are described.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: February 4, 2003
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan
  • Publication number: 20020169200
    Abstract: The present invention relates to novel substituted indole compounds that are antagonists of alpha V (&agr;v) integrins, for example &agr;v&bgr;3 and &agr;v&bgr;5 integrins, their pharmaceutically acceptable salts, and pharmaceutical compositions thereof. The compounds may be used in the treatment of pathological conditions mediated by &agr;v&bgr;3 and &agr;v&bgr;5 integrins, including such conditions as tumor growth, metastasis, restenosis, osteoporosis, inflammation, macular degeneration, diabetic retinopathy, and rheumatoid arthritis.
    Type: Application
    Filed: January 29, 2002
    Publication date: November 14, 2002
    Applicant: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Louis V. LaFrance, Thomas P. Markotan, Juan Jose Marugan, Victor J. Marder, David C. U'Prichard, Beth M. Anaclerio, Zihong Guo, Wenxi Pan, Kristi A. Leonard
  • Patent number: 6476016
    Abstract: Cyclic oxyguanidine pyrazinone compounds are described, including compounds of the Formula I: wherein R3, R4, R5, W, and A are as set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin. Compositions for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation are described.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: November 5, 2002
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Aihua Wang, Bruce Edward Tomczuk, Tianbao Lu, Richard M. Soll, John Curtis Spurlino, Roger Francis Bone
  • Patent number: 6472399
    Abstract: Aminoguanidine and alkoxyguanidine compounds are described, including compounds of the Formula VII: wherein X is O or NR9 and Het, R1, R7, R8, R12-R15, Ra, Rb, Rc, Z, and n are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin. Also described are methods for preparing such compounds. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin. The invention includes a composition for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal, comprising a compound of the invention in a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: October 29, 2002
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Colleen Siedem
  • Patent number: 6420397
    Abstract: Ketothiazole alkoxyguanidine and aminoguanidine analogs are described, including compounds of the Formula I: wherein X is O or NR9 and Het, A, R1, R7, R8, R12, R13, Ra, Rb, Rc, Z, m and n are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin. Also described are methods for preparing such compounds. The compounds of the invention are potent inhibitors of proteases, especially trypsin-like serine proteases, such as chymotrypsin, trypsin, thrombin, plasmin and factor Xa. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin. The invention includes a composition for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal, comprising a compound of the invention in a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: July 16, 2002
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Wenxi Pan, Tianbao Lu, Richard M. Soll, Bruce E. Tomczuk
  • Patent number: 6417161
    Abstract: The present invention is directed to aminoguanidine and alkoxyguanidine compounds, including compounds of Formula I: wherein X is O or NR19 and A1, A2, R7-R10, R18, Ra, Rb, Rc, n and m are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin. Also described are methods for preparing the compounds of Formula I. Certain of the compounds exhibit antithrombotic activity via direct, selective inhibition of thrombin, or are intermediates useful for forming compounds having antithrombotic activity. The invention includes a composition for inhibiting loss of blood platelets, inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: July 9, 2002
    Assignee: 3-Dimensional Pharmaceuticals, Inc.
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Richard M. Soll
  • Publication number: 20020086872
    Abstract: Aminoguanidine and alkoxyguanidine compounds are described, including componds of the Formula VII: 1
    Type: Application
    Filed: December 12, 2001
    Publication date: July 4, 2002
    Inventors: Tianbao Lu, Bruce E. Tomczuk, Thomas P. Markotan, Colleen Siedem