Patents by Inventor Philip E. Wiegert

Philip E. Wiegert 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).

  • 3,5-Disubstituted-2,4,6-triiodoanilides of polyhydroxy-monobasic acids
    Patent number: 4314055
    Abstract: Certain 3,5-disubstituted-2,4,6-triiodoanilides of polyhydroxy-monobasic acids are useful as x-ray contrast agents. Representative of this class of compounds is the compound 3-gluconamido-2,4,6-triiodo-N-methyl-5-(N-methyl-acetamido)-benzamide and the compound 3-gluconamido-5-[N-(2-hydroxyethyl)acetamido]-2,4,6-triiodo-N-methylbenzam ide.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: February 2, 1982
    Assignee: Mallinckrodt, Inc.
    Inventors: George B. Hoey, George P. Murphy, Philip E. Wiegert, James W. Woods
  • 2,4,6-Triiodobenzoic acid derivatives and their use as x-ray contrast agents
    Patent number: 4160015
    Abstract: 5-Gluconamido-2,4,6-triiodo-N-methylisophthalamic acid, 3-acetamido-2,4,6-triiodo-5-trishydroxymethylacetamido-benzoic acid, related compounds and salts and esters thereof are useful as x-ray contrast agents. The corresponding acyl halides are useful as intermediates.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: July 3, 1979
    Assignee: Mallinckrodt, Inc.
    Inventor: Philip E. Wiegert
  • Substituted isophthalamic acids
    Patent number: 4138589
    Abstract: Certain N-[poly(hydroxyalkyl)alkyl],2,4,6-triiodoisophthalamic acids are useful as x-ray contrast agents.
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: February 6, 1979
    Assignee: Mallinckrodt, Inc.
    Inventor: Philip E. Wiegert
  • X-ray contrast agents
    Patent number: 4125599
    Abstract: 5-Gluconamido-2,4,6-triiodo-N-methylisophthalamic acid, 3-acetamido-2,4,6-triiodo-5-trishydroxymethylacetamidobenzoic acid, related compounds and salts and esters thereof are useful as x-ray contrast agents. The corresponding acyl halides are useful as intermediates.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: November 14, 1978
    Assignee: Mallinckrodt, Inc.
    Inventor: Philip E. Wiegert
  • Substituted 2,4,6-triiodoisophthalamic acids
    Patent number: 4069250
    Abstract: Certain N-[poly(hydroxyalkyl)alkyl], 2,4,6-triiodoisophthalamic acids are useful as x-ray contrast agents.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: January 17, 1978
    Assignee: Mallinckrodt, Inc.
    Inventor: Philip E. Wiegert
  • 2,4,6-Triiodo-5-methoxyacetamido-N-methylisophthalamic acid and salts, acyl halides and esters thereof
    Patent number: 3953497
    Abstract: 2,4,6-Triiodo-5-methoxyacetamido-N-methylisophthalamic acid and salts and esters thereof are useful as x-ray contrast agents. The corresponding acyl halides are useful as intermediates.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: April 27, 1976
    Assignee: Mallinckrodt, Inc.
    Inventor: Philip E. Wiegert