Patents by Inventor Charles F. Schwender

Charles F. Schwender 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).

  • Antiallergic pyrido[2,1-b]quinazolin-ones
    Patent number: 4104389
    Abstract: This invention relates to novel compounds of the pyrido-[2,1-b]quinazolin-one series and their methods of preparation. These compounds have utility as antiallergy agents.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: August 1, 1978
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Brooks R. Sunday
  • Benzo[g]pyrido[2,1-b]-quinazolinones
    Patent number: 4076710
    Abstract: Disclosed are novel benzo[g]Pyrido[2,1-b]-quinazolinones which are active as anti-allergy agents and thus have utility in the treatment of allergic reactions such as bronchial asthma.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: February 28, 1978
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Brooks R. Sunday
  • 8-(1H-Tetrazol-5-yl)-11H-pyrido[2,1-b]quinazolin-11-ones and method of treating bronchial asthma using them
    Patent number: 4066767
    Abstract: The present invention relates to 8-(1H-tetrazol-5-yl)-11H-pyrido[2,1-b]quinazolin-11-ones having the following structure: ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen, alkyl, alkyloxy, halogen, hydroxy and methylenedioxy; R.sub.3 is carboxamido, cyano or 5-tetrazolyl groupings and the pharmaceutically acceptable salts of acids and bases thereof.These compounds exhibit anti-allergic properties and are useful as anti-asthmatic agents.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: January 3, 1978
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Brooks R. Sunday
  • Pyrido[2-1-b]quinazolin-ones and their methods of preparation
    Patent number: 4033961
    Abstract: This invention relates to novel compounds of the pyrido-[2,1-b]-quinazolin-one series and their methods of preparation. These compounds have utility as antiallergy agents.
    Type: Grant
    Filed: October 7, 1975
    Date of Patent: July 5, 1977
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Brooks R. Sunday
  • 5-Hydroxy-.alpha.-(substituted aminomethyl)-m-xylene-.alpha.,.alpha.'-diols
    Patent number: 4018825
    Abstract: Compounds of the formula: ##STR1## are disclosed, wherein R.sub.1 and R.sub.2 are hydrogen; or where R.sub.1 is methyl, R.sub.2 is hydrogen, phenyl, or phenyl substituted in the para-position by hydroxy, alkoxy, chloro, phenyl or alkyl having 1-6 carbon atoms. The compounds of this invention are useful in the treatment of bronchial asthma. These compounds exhibit unique biological properties in that they provide the desired bronchial dilation effect without accompanying cardiac stimulation.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: April 19, 1977
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, John Shavel, Jr.
  • Benzo-[g]pyrido[2,1-b]quinazolinones
    Patent number: 4012387
    Abstract: This invention relates to novel benzo- and tetrahydrobenzo-[f,g and h]pyrido[2,1-b]quinazolin-ones and their methods of preparation. These compounds have utility as antiallergy agents.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: March 15, 1977
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Brooks R. Sunday
  • Substituted 9-benzylacridines
    Patent number: 3936457
    Abstract: Novel, substituted 9-Benzylacridines and the methods for their preparation are disclosed. These compounds are useful in the treatment of angina pectoris.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: February 3, 1976
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, Russell E. Pike
  • Substituted 4-benzylquinolines
    Patent number: 3936461
    Abstract: The present invention relates to compounds of the formula: ##SPC1##Wherein R.sub.1 is alkyl, R.sub.2 and R.sub.3 are hydrogen, halogen, alkyl, alkoxy, hydroxy, or methylenedioxy, and R.sub.4 and R.sub.5 are hydrogen, halogen, alkyl, alkoxy, hydroxy, or methylenedioxy and pharmaceutically acceptable salts thereof.These compounds are useful as antianginal agents.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: February 3, 1976
    Assignee: Warner-Lambert Company
    Inventors: Charles F. Schwender, John Shavel, Jr.
  • 5-Amino-4-chloro-6-(substituted amino)-pyrimidines
    Patent number: 3936454
    Abstract: The present invention relates to compounds having the following formula: ##SPC1##In which R.sub.2 is naphthyl alkyl of 1 to 3 carbons or phenyl alkyl of 1 to 3 carbons substituted in the aryl moiety by one or two alkoxy of 1 to 6 carbons, or one or two chloro. This compound is useful as an intermediate for the production of the compounds of the formula: ##SPC2##Which are useful as antianginal or bronchodilator agents.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: February 3, 1976
    Assignee: Warner-Lambert Company
    Inventor: Charles F. Schwender