Patents by Inventor Rudiger D. Haugwitz

Rudiger D. Haugwitz 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: 6362218
    Abstract: Cytotoxic Michael addition derivatives of brefeldin A are described. Oxidation of thiol addition products of brefeldin A provides the corresponding sulfoxides and sulfones. The sulfoxides exhibited more cytotoxic activity than the corresponding sulfides and sulfones in a variety of human cancer cell lines. Pharmaceutical formulations of the disclosed cytotoxic derivatives are also described.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: March 26, 2002
    Assignee: Purdue Research Foundation
    Inventors: Mark S. Cushman, Ankush B. Argade, Rudiger D. Haugwitz, Rajesh Devraj
  • Patent number: 5681832
    Abstract: Aroylaniline compounds which exhibit anti-retroviral activity, pharmaceutical compositions containing such aroylaniline compounds, and methods for treating a retroviral-infected host comprising administering an antiviral effective amount of an aroylaniline compound to a host.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: October 28, 1997
    Assignees: The United States of America as represented by the Department of Health and Human Services, Georgia Tech Research Corporation
    Inventors: Rudiger D. Haugwitz, Leon Zalkow, Ewa Gruszecka-Kowalik, Edward Burgess
  • Patent number: 5441941
    Abstract: Certain new 1,2-dihydroellipticine compounds having activity against CNS specific cancer cell lines because of their ease of passage across the blood-brain barrier are disclosed along with formulations and methods for treating CNS cancers employing these compounds.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: August 15, 1995
    Assignees: The United States of America as represented by the Secretary of DHHS, Purdue Research Foundation
    Inventors: Rudiger D. Haugwitz, Venkatachiala L. Narayanan, Mark Cushman, Jurjus Jurayj
  • Patent number: 5439899
    Abstract: Novel compounds having anti-HIV activity are disclosed along with formulations and methods for treating human immunodeficiency viral infections employing these compounds.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: August 8, 1995
    Assignees: Purdue Research Foundation, The United States of America as represented by the Department of Health and Human Services
    Inventors: Mark Cushman, Rudiger D. Haugwitz, Wieslaw M. Golebiewski
  • Patent number: 5272146
    Abstract: Certain new 1,2-dihydroellipticine compounds having activity against CNS specific cancer cell lines because of their ease of passage across the blood-brain barrier are disclosed along with formulations and methods for treating CNS cancers employing these compounds.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: December 21, 1993
    Assignees: The United States of America as represented by the United States Department of Health and Human Services, Purdue Research Foundation
    Inventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Mark Cushman, Jurjus Jurayj
  • Patent number: 5157049
    Abstract: The invention involves the treatment of cancer in humans by administering water soluble derivatives of taxol. The types of cancer so treatable are those sensitive to treatment with taxol.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: October 20, 1992
    Assignee: The United States of America as represented by the Department of Health & Human Services
    Inventors: Rudiger D. Haugwitz, Leon Zalkow, Jan Glinski, Mathew Suffness, Howard M. Deutsch, Venkatachala Narayanan
  • Patent number: 4994591
    Abstract: This invention relates to new cis diamino platinum complexes; to compositions comprising these complexes; and to processes for their utility as fungicides, bacteriocides and as inhibitors of the growth of cancer in warm-blooded animals, wherein the complex is of the formula: [B(CH.sub.2).sub.n NH.sub.2 ].sub.2 Pt-M and ##STR1## wherein Pt is platinum II or platinum IV; M is selected from Y.sub.2, cyclic ##STR2## cyclic ##STR3## and cyclic ##STR4## when Pt is platinum II and X.sub.4 when Pt is platinum IV; each a is independently 1 or 2; n is from 0-3; each Y is independently --Cl, --Br, --I, --OH, --ONO.sub.2, --OSO.sub.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: February 19, 1991
    Assignee: The Research Foundation of State University of NY
    Inventors: Wayne K. Anderson, Rudiger D. Haugwitz
  • Patent number: 4961811
    Abstract: Affixable paper that can be detached substantially non-destructively is disclosed. A non-essential portion of the affixable paper is so attached to a second paper with a moist adhesive in the form of microdots or microlines that after secure attachment, the affixable paper can be removed from the second paper in substantially original condition. The affixable paper may have cut scores to facilitate removal.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: October 9, 1990
    Inventor: Rudiger D. Haugwitz
  • Patent number: 4942184
    Abstract: Antineoplastic, water soluble, taxol derivatives and methods for preparing the same are described.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: July 17, 1990
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Rudiger D. Haugwitz, Leon Zalkow, Jan Glinski, Mathew Suffness, Howard M. Deutsch, Venkatachala Narayanan
  • Patent number: 4845101
    Abstract: Chemical compounds are provided including pyrazine diazohydroxides (I), as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. Compounds of the invention have pharmacological properties and are useful cytostatic agents and cell growth inhibiting agents.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: July 4, 1989
    Assignee: University of Alabama-Bd. of Trustees
    Inventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
  • Patent number: 4803202
    Abstract: New substituted N-methyl derivatives of mitindomide and methods of preparing the same are disclosed. The novel compounds are water soluble and have anti-neoplastic activity.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: February 7, 1989
    Assignee: The United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: Rudiger D. Haugwitz, Venkatachala Naratanan, Leon H. Zalkow, Howard M. Deutsch, Leslie Gelbaum
  • Patent number: 4709033
    Abstract: Chemical compounds are provided including pyrazine diazohydroxides (I), as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. Compounds of the invention have pharmacological properties and are useful cytostatic agents and cell growth inhibiting agents.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: November 24, 1987
    Assignee: Board of Trustees of the University of Alabama
    Inventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
  • Patent number: 4681886
    Abstract: This invention is directed to substituted 4-phenoxy and 4-phenylthio prolines of the formula ##STR1## which possess useful hypotensive activity.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: July 21, 1987
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Rudiger D. Haugwitz, Peter W. Sprague
  • Patent number: 4670461
    Abstract: New substituted, formaldehyde derived mitindomide and methods of preparing the same are disclosed. The novel compounds are water soluble and have anti-neoplastic activity. The formaldehyde derived mitindomide is prepared by reacting mitindomide with formaldehyde and further acetylating the derived hydroxymethyl compound. The amido compounds can be derived by reacting mitindomide in mannich fashion, i.e-formaldehyde and secondary amines.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: June 2, 1987
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Leon H. Zalkow, Howard M. Deutsch
  • Patent number: 4599352
    Abstract: New substantially isomerically pure tetrahalo (1,2-diaminocyclohexane) Pt (IV) complexes having antineoplastic activity are disclosed.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: July 8, 1986
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Venkatachala L. Narayanan, Mary K. Wolpert-Defilippes, Rudiger D. Haugwitz
  • Patent number: 4536501
    Abstract: Compounds of the formula ##STR1## are disclosed. They possess angiotensin converting enzyme inhibition activity and diuretic activity and are therefore useful as antihypertensive agents.
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: August 20, 1985
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Joseph E. Sundeen, Rudiger D. Haugwitz, Peter W. Sprague
  • Patent number: 4529548
    Abstract: Antiinflammatory activity is exhibited by steroids having the formula ##STR1## or the 1,2-dehydro derivative thereof, wherein R.sub.1 is alkyl, alkanoyloxyalkyl, arylcarbonyloxyalkyl, alkenyl, alkynyl, cycloalkyl, aryl or arylalkyl;R.sub.2 is hydrogen, hydroxy, alkoxy, aryloxy, methylene, alkylthio, arylthio, alkanoyl, alkanoyloxy, or halogen;R.sub.3 is hydrogen, methyl, hydroxy or halogen; andn is 0, 1 or 2.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: July 16, 1985
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ravi K. Varma, Rudiger D. Haugwitz
  • Patent number: 4338435
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, halogen, trifluoromethyl, aminosulfonyl, nitro, alkyl or alkoxy;R.sub.3 is hydrogen, alkyl, or phenylmethyl;R.sub.4 is hydrogen, alkyl, or phenyl, and R.sub.15 is alkyl, phenyl or phenylmethyl, or R.sub.4 and R.sub.15 together are --(CH.sub.2).sub.m -- wherein m is 1 or 2;R.sub.5,R.sub.6,R.sub.7,R.sub.8,R.sub.9,R.sub.10,R.sub.11,R.sub.12,R.sub.13 and R.sub.14 are each independently hydrogen, halogen, alkyl or phenyl;n.sub.1,n.sub.2,n.sub.3,n.sub.4 and n.sub.5 are each independently 0 or 1;with the proviso that if R.sub.4 and R.sub.15 together are --(CH.sub.2).sub.m -- the sum of n.sub.1, n.sub.2, n.sub.3, n.sub.4, n.sub.5 and m is 2 or 3;have diuretic activity.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: July 6, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Rudiger D. Haugwitz
  • Patent number: 4331806
    Abstract: Compounds having the formula ##STR1## wherein: R.sub.1 is hydrogen, alkyl, aryl or arylalkyl;R.sub.2 is hydrogen and R.sub.3 is hydrogen, hydroxy, alkoxy or halogen, or together R.sub.2 and R.sub.3 can be .dbd.Q or --X--(CH.sub.2).sub.t --X-- wherein X is oxygen or sulfur and t is 2 or 3;R.sub.4 is hydrogen or alkyl;R.sub.5 is hydrogen, alkyl or trifluoromethyl;R.sub.6 is alkyl of 1 to 20 carbon atoms, aryl, arylalkyl or a 5- or 6-membered heterocyclic group having 1 to 2 nitrogen, sulfur or oxygen atoms in the ring;R.sub.7 is aryl;m is 0, 1 or 2; andn is 1 or 2have useful hypotensive activity.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: May 25, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Rudiger D. Haugwitz
  • Patent number: RE30990
    Abstract: Benzimidazolederivatives are provided having the structure ##STR1## wherein R.sup.1 is lower alkyl, phenyl-lower alkyl, halo-lower alkyl, mono-lower alkylaminoalkyl, di-lower alkylaminoalkyl, and alkyl pyridinium halide, R.sup.2 and R.sup.3 may be the same or different and are hydrogen or lower alkyl, R.sup.4 is cycloalkyl or cycloalkenyl, and m is 0 to 3, n is 0 to 3, m+n being .ltoreq.5. These compounds are useful as anthelmintic agents.
    Type: Grant
    Filed: September 12, 1980
    Date of Patent: July 6, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Rudiger D. Haugwitz, Barbara V. Maurer