Patents Represented by Attorney, Agent or Law Firm Robert W. Stevenson
  • Patent number: 6180629
    Abstract: [4,5]-Fused-1,3-disubstituted-1,2-diazine-6-one derivatives with nitrogen-containing substituents in position one are useful for inducing or promoting apoptosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasia, including precancerous and cancerous lesions.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: January 30, 2001
    Assignee: Cell Pathways, Inc.
    Inventors: Xiaojing Wang, Gerhard Sperl, Paul Gross, Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6166053
    Abstract: Substituted condensation products of N-benzyl-3-indenylacetamides with heterocyclic aldehydes are useful for inducing or promoting apotosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasias, including precancerous and cancerous lesions.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: December 26, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gerhard J. Sperl, Paul Gross, Klaus Brendel, Gary A. Piazza, Rifat Pamukcu
  • Patent number: 6160003
    Abstract: 1,3,6-Trihydro-6-Aza-3-Oxapentalen-2-One Derivatives of Formula I are useful for inducing or promoting apoptosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasia: ##STR1## Wherein R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, lower alkyl, and benzyl,R.sub.3 and R.sub.4 are selected from the group consisting of substituted or unsubstituted phenyl, and the like,R.sub.5 is selected from the group consisting of hydrogen, lower alkyl, and the like,Y is selected from the group consisting of CH.sub.2, C.dbd.O, CH--OH; m is an integer from 0-3; X is selected from the group consisting of CH.sub.2, C.dbd.O, CH--OH, and SO.sub.2 ; and n is an integer from 0-2.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: December 12, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gerhard Sperl, Rifat Pamukcu
  • Patent number: 6156528
    Abstract: This invention provides a method to identify compounds potentially useful for the treatment of neoplasia in mammals. The phosphodiesterase inhibitory activity of a compound is determined along with COX inhibitory activity. Growth inhibitory and apoptosis inducing effects on cultured tumor cells are also determined. Compounds that exhibit phosphodiesterase inhibiton, growth inhibition and apoptosis induction, but not substantial prostaglandin inhibitory activity, are desirable for the treatment of neoplasia.
    Type: Grant
    Filed: December 19, 1998
    Date of Patent: December 5, 2000
    Assignee: Cell Pathways, Inc
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6133271
    Abstract: Benzothienopyrimidine derivatives for inducing or promoting apoptosis and for arresting uncontrolled neoplastic cell proliferation, and specifically for arresting and treating neoplasia, including precancerous and cancerous lesions of formula I: ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, A, OA, alkenyl, alkynyl, --NO.sub.2, --CF.sub.3 or halogen, with the proviso that one of R.sub.1 or R.sub.2 is not hydrogen; R.sub.3 and R.sub.4 are independently selected from the group consisting of hydrogen, A, --OA, halogen, --NO.sub.2, --NH.sub.2, --NHA or --NAA', or R.sub.3 and R.sub.4 are together form a moiety selected from the group consisting of --O--CH.sub.2 --CH.sub.2 --, --O--CH.sub.2 --O-- or --O--CH.sub.2 --CH.sub.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: October 17, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6130053
    Abstract: A method for selecting compounds for the treatment of neoplasia includes assessing whether the compounds cause an increase in PKG activity in the neoplasia of interest.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: October 10, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: W. Joseph Thompson, Li Liu, Han Li
  • Patent number: 6124303
    Abstract: A method for inhibiting neoplastic cells and related conditions by exposing them to 9-substituted 2-(2-n-alkoxyphenyl)purin-6-one compounds.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: September 26, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6121321
    Abstract: Substituted methoxy benzylidene indenyl compounds are useful in the treatment of precancerous lesions and neoplasms.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: September 19, 2000
    Assignees: Cell Pathways, Inc., University of Arizona
    Inventors: Gerhard Sperl, Paul Gross, Klaus Brendel, Gary A. Piazza, Rifat Pamukcu
  • Patent number: 6077842
    Abstract: A method for inhibiting neoplasia, particularly cancerous and precancerous lesions by exposing the affected cells to pyrazolopyridylpyridazinone derivatives.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: June 20, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6071934
    Abstract: Indenyl hydroxamic acids, (hydroxy) ureas and urethanes are useful in the treatment of precancerous lesions and neoplasms.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: June 6, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gerhard Sperl, Paul Gross, Rifat Pamukcu, Klaus Brendel, Gary A. Piazza
  • Patent number: 6066634
    Abstract: Substituted condensation products of N-benzyl-3-indenylacetamides with heterocyclic aldehydes are useful for inducing or promoting apotosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasias, including precancerous and cancerous lesions.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: May 23, 2000
    Assignees: Cell Pathways, Inc., University of Arizona
    Inventors: Gerhard J. Sperl, Paul Gross, Klaus Brendel, Gary A. Piazza, Rifat Pamukcu
  • Patent number: 6063818
    Abstract: Substituted benzylidene indenyl formamides, acetamides and propionamides are useful in the treatment of precancerous lesions and neoplasms.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: May 16, 2000
    Assignee: Cell Pathways Inc.
    Inventors: Gerhard Sperl, Paul Gross, Klaus Brendel, Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6060477
    Abstract: Derivatives of Phenyl Cycloamino Pyrimidinone are useful for the treatment of patients having precancerous lesions. These compounds are also useful to inhibit growth of neoplastic cells.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 9, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gary A. Piazza, Rifat Pamukcu
  • Patent number: 6046206
    Abstract: Derivatives of quinazoline are useful for the treatment of patients having precancerous lesions. These compounds are also useful to inhibit the growth of neoplastic cells.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: April 4, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary Piazza
  • Patent number: 6046216
    Abstract: Derivatives of phenyl pyridinone are useful for the treatment of patients having precancerous lesions. These compounds are also useful to inhibit the growth of neoplastic cells.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: April 4, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gary Piazza, Rifat Pamukcu
  • Patent number: 6046199
    Abstract: A method for inhibiting neoplastic, particularly cancerous and precancerous lesions by exposing the affected cells to pyrido[3,4b]indoles.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: April 4, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6037345
    Abstract: This invention relates to a method for the selective inhibition of neoplastic cells, for example, for the treatment of precancerous lesions or other neoplasias in mammals.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: March 14, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6034099
    Abstract: A method for treating neoplasia involving the administration of certain pyrazolinone derivatives.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: March 7, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Rifat Pamukcu, Gary A. Piazza
  • Patent number: 6028116
    Abstract: Substituted condensation products of 1H-indenylhydroxyalkanes with aldehydes are useful for inducing or promoting apoptosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in the arresting and treatment of neoplasia, including precancerous and cancerous lesions.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: February 22, 2000
    Assignee: Cell Pathways, Inc.
    Inventors: Gerhard Sperl, Paul Gross, Klaus Brendel, Gary Piazza, Rifat Pamukcu
  • Patent number: 6020379
    Abstract: In position 7 substituted indenyl-3-acetic acid derivatives and pharmaceutically acceptable salts and amides thereof have anti-neoplastic activity.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: February 1, 2000
    Assignee: Cell Pathways, Inc.
    Inventor: Gerhard Sperl