Patents by Inventor Richard D. Marshall

Richard D. Marshall 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: 20230310907
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Patent number: 11707638
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: July 25, 2023
    Assignee: 3M Innovative Properties Company
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Publication number: 20200276461
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 3, 2020
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Patent number: 10695592
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 30, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Patent number: 10668307
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 2, 2020
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Publication number: 20180221691
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 9, 2018
    Inventors: Albert F. ZWOLINSKY, Richard D. MARSHALL, Christopher G. HALL
  • Patent number: 9582610
    Abstract: The description relates to visual post builders. One example can receive a user search topic relating to a collage. This example can concurrently present a collage template and search results for the search topic. The collage template can be manifest as a grid of equal sized rectangles. The example can automatically populate a user selection from the search results into one or more rectangles of the collage template. The example can also automatically populate additional user selections into remaining rectangles of the collage template until all of the rectangles of the collage template are populated or the user indicates that the collage is complete.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 28, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Rajeev Karunakaran, Richard I. Zaragoza, Steven W. Ickman, Richard D. Marshall, David A. Raskino, William L. Portnoy
  • Publication number: 20160317845
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: June 10, 2016
    Publication date: November 3, 2016
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Patent number: 9387299
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two points in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 12, 2016
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Publication number: 20140280054
    Abstract: The description relates to visual post builders. One example can receive a user search topic relating to a collage. This example can concurrently present a collage template and search results for the search topic. The collage template can be manifest as a grid of equal sized rectangles. The example can automatically populate a user selection from the search results into one or more rectangles of the collage template. The example can also automatically populate additional user selections into remaining rectangles of the collage template until all of the rectangles of the collage template are populated or the user indicates that the collage is complete.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Rajeev Karunakaran, Richard I. Zaragoza, Steven W. Ickman, Richard D. Marshall, David A. Raskino, William L. Portnoy
  • Publication number: 20130319408
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: October 27, 2010
    Publication date: December 5, 2013
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Patent number: 6128872
    Abstract: The present invention relates to a cable protection system, and in particular to a cable protection system used to channel and protect cables or flexible pipes such as computer network cables, power cables, fiber optic cables, and hydraulic or pneumatic control lines laid within a cavity.The cable protection system comprises a sheet (10) of non-metallic material which may be shaped to form a channel. The cable protection system is adapted to fit between spacing bars (18) in a false floor, wall or ceiling.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 10, 2000
    Assignee: Comunica PLC
    Inventors: Richard D. Marshall, Richard Bell
  • Patent number: 3950995
    Abstract: Ambient or static pressure in a fluid stream is sensed with a hollow circr cylinder placed normal to the fluid stream. A shroud is mounted on the cylinder for adjustment over a ring of ports provided in the cylinder. In this manner, the relationship between the internal pressure in the cylinder and the ambient pressure is controllable. Ideally, the internal and ambient pressures are exactly equal. Further, extension of the cylinder above and below the shroud provides symmetry for positive and negative angles of attack.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: April 20, 1976
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Richard D. Marshall