Patents Assigned to Pentech Pharmaceuticals, Inc.
  • Patent number: 6660298
    Abstract: Method for preparing a wet granule formulation of paroxetine hydrochloride are disclosed. The formulations are suitable for tabletting and capsulation.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: December 9, 2003
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Bruce Ronsen, Venkata R. Kota, Yogesh Sadhale
  • Patent number: 6638948
    Abstract: A free-flowing, amorphous paroxetine hydrochloride composition suitable as a therapeutic agent for premature ejaculation can be prepared by dissolving paroxetine free base in a hydrochloric acid-ethanol solution followed by drying. The present compositions comprise amorphous paroxetine hydrochloride and at least one hydroxyl-bearing compound. In one preferred embodiment, the hydroxyl-bearing compound is ethanol and the amount of ethanol present in the amorphous product is in the range of 1 to 4 weight percent based on paroxetine hydrochloride. The amorphous product is stable and substantially non-hygroscopic.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 28, 2003
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Bruce Ronsen, Ragab El-Rashidy
  • Patent number: 6566368
    Abstract: Impotence can be ameliorated without substantial undesirable side effects by nasal administration of apomorphine, optionally with an antiemetic agent present in an amount sufficient to substantially reduce nausea symptoms that may be associated with the use of apomorphine.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: May 20, 2003
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 6503927
    Abstract: A stable amorphous paroxetine hydrochloride composition suitable as a therapeutic agent is prepared employing an aqueous solvent medium containing an acidulant and polyvinylpyrrolidone and drying the resulting solid dispersion. The preferred compositions include amorphous paroxetine hydrochloride, polyvinylpyrrolidone and citric acid.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: January 7, 2003
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Bruce Ronsen, Yogesh D. Sadhale, Ragab El-Rashidy
  • Publication number: 20020035131
    Abstract: Male patients suffering from premature ejaculation dysfunction are treated by an oral therapy regimen of administration of paroxetine substantially within several hours before sexual intercourse. The beneficial effect of the paroxetine treatment can be optimized and maintained by a combination oral therapy regimen in which the patient converts to continual maintenance paroxetine administration after an initial loading period of daily doses of paroxetine taken over of relatively short duration.
    Type: Application
    Filed: October 3, 2001
    Publication date: March 21, 2002
    Applicant: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Chris McMahon
  • Patent number: 6306437
    Abstract: Psychogenic impotence can be ameliorated without substantial undesirable side effects by administration of apomorphine and an antiemetic agent in an amount sufficient to substantially reduce nausea symptoms associated with the use of apomorphine.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: October 23, 2001
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 6200983
    Abstract: Psychogenic impotence or erectile dysfunction can be identified in psychogenic male patients and can be ameliorated, without substantial undesirable side effects, by sublingual administration of apomorphine dosage forms so as to maintain a plasma concentration of apomorphine of no more than about 5.5 nanograms per milliliter.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: March 13, 2001
    Assignees: Pentech Pharmaceuticals, Inc., Queen's University at Kingston
    Inventors: Ragab El-Rashidy, Jeremy P. W. Heaton, Alvaro Morales, Michael A. Adams
  • Patent number: 6193992
    Abstract: Sexual dysfunction in human females can be ameliorated, without substantial undesirable side effects, by apomorphine. Administration of apomorphine increases nerve stimulated clitoral intracavernosal blood flow and vaginal wall blood flow for enhanced clitoral erection and vaginal engorgement in a female. A plasma concentration of apomorphine of no more than about 5.5 nanograms per milliliter is preferably maintained.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: February 27, 2001
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 6121276
    Abstract: Psychogenic impotence can be ameliorated without substantial undesirable side effects by administration of apomorphine and an antiemetic agent in an amount sufficient to substantially reduce nausea symptoms associated with the use of apomorphine.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: September 19, 2000
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 6087362
    Abstract: The treatment of sexual dysfunction in human patients by an oral therapy regimen of administration of apomorphine and sildenafil is disclosed. This treatment optimizes the efficacy of each drug and substantially minimizes the undesirable side effects associated individually therewith. Apomorphine and sildenafil can be co-administered with a combination dosage unit or administered sequentially in separate dosage units, substantially prior to sexual activity. Other erectogenic agents can be administered along with apomorphine and sildenafil.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 11, 2000
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventor: Ragab El-Rashidy
  • Patent number: 5994363
    Abstract: Symptoms of Parkinson's disease and psychogenic male erectile dysfunction (MED) can be ameliorated through the use of apomorphine. The adverse side effects of apomorphine administration, such as nausea, vomiting, yawning, and cardiovascular effects, can be significantly reduced by a dose escalating method of acclimatization. An initial dose of apomorphine is administered to the patient, and subsequently increased over a period of time until a final apomorphine dose in excess of a desired therapeutic dose has been received by the patient. Thereafter a therapeutic dose of apomorphine, less than the final apomorphine dose, is administered to the patient with attendant reduced side effects.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: November 30, 1999
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 5985889
    Abstract: Psychogenic impotence or erectile dysfunction can be identified in psychogenic male patients and can be ameliorated, without substantial undesirable side effects, by sublingual administration of apomorphine dosage forms so as to maintain a plasma concentration of apomorphine of no more than about 5.5 nanograms per milliliter.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: November 16, 1999
    Assignees: Pentech Pharmaceuticals, Inc., Queen's University at Kingston
    Inventors: Ragab El-Rashidy, Jeremy P. W. Heaton, Alvaro Morales, Michael A. Adams
  • Patent number: 5945117
    Abstract: Sexual dysfunction in human females can be ameliorated, without substantial undesirable side effects, by sublingual administration of apomorphine dosage forms. Administration of apomorphine increases nerve stimulated clitoral intracavernosal blood flow and vaginal wall blood flow for enhanced clitoral erection and vaginal engorgement in a female. A plasma concentration of apomorphine of no more than about 5.5 nanograms per milliliter is preferably maintained.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: August 31, 1999
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 5888534
    Abstract: A composition providing a relatively slow release of water-soluble drugs, such as apomorphine, for delivery via the sublingual or buccal routes.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: March 30, 1999
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen, Emad Eldin Hassan
  • Patent number: 5830500
    Abstract: A direct compression tablet exhibiting relatively low hardness provides a relatively rapid release of fluoxetine. The tablet has a hardness of no more than about 6 kilopascals and a dicalcium phosphate dihydrate-to-disintegrant weight ratio of about 3 to about 7.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: November 3, 1998
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen
  • Patent number: 5770606
    Abstract: Psychogenic impotence or erectile dysfunction can be identified in psychogenic male patients and can be ameliorated, without substantial undesirable side effects, by sublingual administration of apomorphine dosage forms so as to maintain a plasma concentration of apomorphine of no more than about 5.5 nanograms per milliliter.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: June 23, 1998
    Assignees: Pentech Pharmaceuticals, Inc., Queen's University at Kingston
    Inventors: Ragab El-Rashidy, Jeremy P. W. Heaton, Alvaro Morales, Michael A. Adams
  • Patent number: 5672612
    Abstract: A free-flowing, amorphous paroxetine hydrochloride-ethanol composition suitable as a therapeutic agent for premature ejaculation can be prepared by dissolving paroxetine free base in a hydrochloric acid-ethanol solution followed by drying. In a preferred embodiment, the amount of ethanol present in the amorphous product is in the range of 1 to 4 weight percent based on paroxetine hydrochloride. The amorphous product is stable and substantially non-hygroscopic.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: September 30, 1997
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Bruce Ronsen, Ragab El-Rashidy
  • Patent number: 5624677
    Abstract: A composition providing a relatively slow release of water-soluble drugs, such as apomorphine, for delivery via the sublingual or buccal routes.
    Type: Grant
    Filed: June 13, 1995
    Date of Patent: April 29, 1997
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Ragab El-Rashidy, Bruce Ronsen, Emad E. Hassan
  • Patent number: 5562917
    Abstract: Dosage forms for the transdermal administration of apomorphine are described. The dosage forms are water-soluble gel compositions that contain apomorphine, optionally together with a permeation enhancer, or transdermal patches.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: October 8, 1996
    Assignee: Pentech Pharmaceuticals, Inc.
    Inventors: Franck Durif, Ragab El-Rashidy