Patents by Inventor Richard L. Webb

Richard L. Webb 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).

  • Fit-test method for respirator with sensing system
    Patent number: 11918837
    Abstract: There is provided a fit testing method comprising: providing a respirator donned by a wearer; providing a sensor in electrical communication with a sensing element, where the sensor is configured to monitor a particulate concentration parameter of a gas space within the respirator, and a second particulate concentration parameter of a gas space outside the respirator, where the sensor is attached to the respirator such that the respirator such that the weight of the sensor is supported by the respirator; and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration within the respirator to the particulate concentration parameter outside the respirator.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 5, 2024
    Assignee: 3M Innovative Properties Company
    Inventors: Richard C. Webb, Andrew S. Viner, Daniel B. Taylor, Jessica L. T. Hauge, Jennifer L. Kamarainen, Jacob P. Vanderheyden, Silvia G. Guttmann, Kenneth B. L. Stanford
  • Electron beam and x-ray resists
    Patent number: 4868241
    Abstract: Polymers are disclosed comprising a poly(vinyl alcohol) backbone with the following groups or combination of groups bound to the backbone:(A) (substituted alkyl)benzoyl groups; or(B) (substituted alkyl)benzoyl groups, and (vinyl)benzoyl groups; or(C) (substituted alkyl)benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro) benzoyl groups;(D) (substituted alkyl)benzoyl groups, (vinyl) benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro)benzoyl groups;(E) (vinyl)benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro) benzoyl groups; or(F) (halo)benzoyl groups.Each of these polymers can optionally contain, bound to the poly(vinyl alcohol) backbone, (trialkylsily) benzoyl groups.The benzoyl groups are randomly bound to the poly(vinyl alcohol) by ester linkages. Residual pendant hydroxy groups remain after the attachment of the benzoyl groups.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: September 19, 1989
    Assignee: American Cyanamid Company
    Inventors: Laura J. Hiscock, Bruce H. Baretz, Richard L. Webb
  • Process for preparing certain 1,4-di[.omega.-(2-hydroxyethylamino)alkylamino]anthraquinone free bases
    Patent number: 4715993
    Abstract: This disclosure describes a novel process for liberating the free bases of certain 1,4-di[.omega.-(2-hydroxyethylamino)alkylamino]anthraquinones from the salts thereof.
    Type: Grant
    Filed: June 14, 1985
    Date of Patent: December 29, 1987
    Assignee: American Cyanamid Company
    Inventors: Keith C. Murdock, Richard L. Webb
  • Polymeric[[(oxazolidinyl)alkyl]amino]anthraquinones
    Patent number: 4526788
    Abstract: This disclosure describes novel polymeric 1,4-bis-[(1,3-oxazolidin-3-yl)alkylamino]anthraquinones prepared by condensation of 1,4-bis-[(2-hydroxyalkylamino)alkylamino]anthraquinones with dialdehydes which are useful as anti-cancer agents.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: July 2, 1985
    Assignee: American Cyanamid Company
    Inventors: Keith C. Murdock, Richard L. Webb
  • Synthetic polyester surgical articles
    Patent number: 4300565
    Abstract: A procedure is disclosed employing the sequential addition of monomers to form a copolymer useful in the manufacture of surgical articles.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: November 17, 1981
    Assignee: American Cyanamid Company
    Inventors: Michael N. Rosensaft, Richard L. Webb
  • Synthetic polyester surgical articles
    Patent number: 4243775
    Abstract: A procedure is disclosed employing the sequential addition of monomers to form a copolymer useful in the manufacture of surgical articles.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: January 6, 1981
    Assignee: American Cyanamid Company
    Inventors: Michael N. Rosensaft, Richard L. Webb