Patents by Inventor David C. Whritenour

David C. Whritenour 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: 6657065
    Abstract: The present invention relates to methods of making quinoline amides of Formula I below, which are microsomal triglyceride transfer protein inhibitors and can be used as medicines. The present invention also relates to compounds that are used to make quinoline amides of Formula I and methods of making these compounds.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 2, 2003
    Assignee: Pfizer Inc
    Inventors: Norma J. Tom, David C. Whritenour
  • Publication number: 20020161233
    Abstract: The present invention relates to methods of making quinoline amides of Formula I below, which are microsomal triglyceride transfer protein inhibitors and can be used as medicines.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 31, 2002
    Inventors: Norma J. Tom, David C. Whritenour
  • Patent number: 6417367
    Abstract: The present invention relates to methods of making quinoline amides of Formula I below, which are microsomal triglyceride transfer protein inhibitors and can be used as medicines. The present invention also relates to compounds that are used to make quinoline amides of Formula I and methods of making these compounds.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 9, 2002
    Assignee: Pfizer Inc.
    Inventors: Norma J. Tom, David C. Whritenour
  • Publication number: 20020042516
    Abstract: The present invention relates to methods of making quinoline amides of Formula I below, which are microsomal triglyceride transfer protein inhibitors and can be used as medicines.
    Type: Application
    Filed: August 8, 2001
    Publication date: April 11, 2002
    Inventors: Norma J. Tom, David C. Whritenour
  • Patent number: 6103912
    Abstract: A novel class of bridged indicator dyes is disclosed which possess absorption in the infrared region of the electromagnetic spectrum. These bridged indicator dyes are useful as light-absorbing, pH-sensitive optical filter agents in diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes. These indicator dyes will also find utility in titrations and other analytical techniques and products where pH-sensitive indicator dyes are employed and absorption of infrared is useful.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: August 15, 2000
    Assignee: Polaroid Corporation
    Inventors: Charles E. Jandrue, Sr., Marcis M. Kampe, Myron S. Simon, David P. Waller, David C. Whritenour
  • Patent number: 5811530
    Abstract: There are described image-recording materials which include an image dye-providing compound comprising a novel naphthol azo cyan dye having a 3-aminobenzoisothiazole moiety. The image dye-providing compound includes a diffusion control moiety such as a hydroquinonyl developer group, a precursor thereof or a thiazolidine moiety and, may be diffusible or nondiffusible as a function of the diffusion control moiety.Image-recording materials according to the invention including those which contain high potential developers such as aminoreductone allow sufficient cyan chromophore to diffuse to the image-receiving layer to provide an acceptable photograph and result in no appreciable reduction of the 3-aminobenzoisothiazole moiety of the novel naphthol azo cyan dye.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: September 22, 1998
    Assignee: Polaroid Corporation
    Inventors: Michael J. Arnost, Peter Viski, David P. Waller, David C. Whritenour
  • Patent number: 5716754
    Abstract: There are described image-recording materials which include an image dye-providing compound comprising a novel naphthol azo cyan dye having a 3-aminobenzoisothiazole moiety. The image dye-providing compound includes a diffusion control moiety such as a hydroquinonyl developer group, a precursor thereof or a thiazolidine moiety and, may be diffusible or nondiffusible as a function of the diffusion control moiety.Image-recording materials according to the invention including those which contain high potential developers such as aminoreductone allow sufficient cyan chromophore to diffuse to the image-receiving layer to provide an acceptable photograph and result in no appreciable reduction of the 3-aminobenzoisothiazole moiety of the novel naphthol azo cyan dye.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: February 10, 1998
    Assignee: Polaroid Corporation
    Inventors: Michael J. Arnost, Peter Viski, David P. Waller, David C. Whritenour
  • Patent number: 5691458
    Abstract: There are described compounds which are represented by the formula ##STR1## The compounds are useful as dyes, and as intermediates and dye moieties in the preparation of compounds, which are particularly useful in imaging applications, such as, for example, diffusion transfer photographic systems.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: November 25, 1997
    Assignee: Polaroid Corporation
    Inventors: Michael J. Arnost, Peter Viski, David P. Waller, David C. Whritenour
  • Patent number: 5414091
    Abstract: There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3-sulfur-nitrogen groups. The dye-providing compounds are capable of releasing the coupler dye upon cleavage in the presence of silver ions or a soluble silver complex. The dye-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: May 9, 1995
    Assignee: Polaroid Corporation
    Inventors: Efthimios Chinoporos, Robert H. Pauze, David P. Waller, David C. Whritenour
  • Patent number: 5340689
    Abstract: There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3 -sulfur-nitrogen groups. The dye-providing compounds are capable of releasing the coupler dye upon cleavage in the presence of silver ions or a soluble silver complex. The dye-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: August 23, 1994
    Assignee: Polaroid Corporation
    Inventors: Efthimios Chinoporos, Robert H. Pauze, David P. Waller, David C. Whritenour
  • Patent number: 5294375
    Abstract: Disclosed is a class of bridged phthalides and sulfinate esters which exhibit reversible thermochromism. At room temperature and in the presence of base, these compounds are substantially colorless but upon the application of heat they become colored, reverting to their original colorless or weakly colored state upon cooling. This colorless to colored, temperature-dependent cycle can be repeated many times. These compounds have utility as temperature sensors and as thermal pH indicators.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: March 15, 1994
    Assignee: Polaroid Corporation
    Inventors: Marcis M. Kampe, David P. Waller, David C. Whritenour
  • Patent number: 5244771
    Abstract: A novel class of bridged indicator dyes is disclosed which possess absorption in the infrared region of the electromagnetic spectrum. These bridged indicator dyes are useful as light-absorbing, pH-sensitive optical filter agents in diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes. These indicator dyes will also find utility in titrations and other analytical techniques and products where pH-sensitive indicator dyes are employed and absorption of infrared is useful.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: September 14, 1993
    Assignee: Polaroid Corporation
    Inventors: Charles E. Jandrue, Sr., Marcis M. Kampe, Myron S. Simon, David P. Waller, David C. Whritenour