Patents by Inventor Thomas M. Whitfield

Thomas M. Whitfield 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).

  • Publication number: 20210316499
    Abstract: An apparatus and process for forming a predetermined three-dimensional (3D) object, in particular to an apparatus and method for making of a predetermined 3D object including an outer finished show surface without the use of post processing steps, and selectively printing three-dimension features onto another surface without compromising the integrity of the outer finished surface quality. A build platform of the apparatus includes a smooth surface to disperse deposited materials into a highly uniform base layer with exceptional surface quality on the interface between the deposited material and the build platform. The apparatus and process have the ability to produce an exceptionally smooth surface capable of achieving automotive standards for exterior components without the use of post-processing.
    Type: Application
    Filed: September 9, 2019
    Publication date: October 14, 2021
    Applicant: Magna Exteriors Inc.
    Inventors: Thomas M. Whitfield, John A. Ingram, Zongxun Wang, Alexis Baltazar-y-Jimenez
  • Patent number: 4224266
    Abstract: The manufacture of detergent bars having liquid, for example a colored liquid, injected into the mass is described in UK Pat. No. 1387567. The present invention describes manufacture using a single screw plodder providing two streams of extruded detergent material for cutting and stamping. A partition is provided in the extrusion cone to provide improved quality of external striping.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: September 23, 1980
    Assignee: Lever Brothers Company
    Inventors: Leslie Hunt, Ian T. Nicolson, Thomas M. Whitfield
  • Patent number: 4222979
    Abstract: A liquid component can be introduced into a detergent bar by injecting liquid within or immediately downstream of a multi-apertured plate positioned before the compression cone of an extruder. The method can be used to produce marbled bars with the aid of a colored liquid and is described in U.K. Pat. No. 1,387,567.When a double extruder is used together with a common compression cone the injected liquid becomes unevenly distributed within the detergent. Even distribution of the liquid as striations is achieved by use of a partition in the cone to ensure each detergent stream is subjected to separate compression during movement down the cone. The partition extends to the final extrusion plate; the velocities of the two streams are equalized by having a common extrusion volume between after the two screw extruders.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: September 16, 1980
    Assignee: Lever Brothers Company
    Inventors: Leslie Hunt, Ian T. Nicolson, Thomas M. Whitfield
  • Patent number: 4193752
    Abstract: A liquid component can be introduced into a detergent bar by injecting liquid within or immediately downstream of a multi-apertured plate positioned before the compression cone of an extruder. The method can be used to produce marbled bars with the aid of a colored liquid and is described in UK Pat. No. 1387567.When a double extruder is used together with a common expression cone the injected liquid becomes unevenly distributed within the detergent. Even distribution of the liquid as striations is achieved by use of a partition in the cone to ensure each detergent stream is subjected to separate compression during movement down the cone.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: March 18, 1980
    Assignee: Lever Brothers Co.
    Inventors: Leslie Hunt, Ian T. Nicolson, Thomas M. Whitfield
  • Patent number: 4162288
    Abstract: A liquid component can be introduced into a detergent bar by injecting liquid within or immediately downstream of a multi-apertured plate positioned before the compression cone of an extruder. The method can be used to produce marbled bars with the aid of a colored liquid and is described in UK No. 1387567.When a double extruder is used together with a common compression cone the injected liquid becomes unevenly distributed within the detergent. Even distribution of the liquid as striations is achieved by use of a partition in the cone to ensure each detergent stream is subjected to separate compression during movement down the cone.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: July 24, 1979
    Assignee: Lever Brothers Company
    Inventors: Leslie Hunt, Ian T. Nicolson, Thomas M. Whitfield