Patents by Inventor William F. Stewart

William F. Stewart 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: 10052633
    Abstract: An ergonomic vial and tube rack is disclosed for retaining a plurality of vials or tubes containing fluid therein in inclined or vertical upright positions, features of which a mechanism for a variable incline angle; lid/cap receptacles positioned either on a shelf above the vial holders or inside the cover when in an open position; an ice or heat pack compartment or a sealed compartment underneath the vials and/or behind the vials for the limited temperature control; rack to rack pin-to-hole locators for stackability, ease of transportation, and storage; color-coding of vial racks for convenience and work-flow assistance; a transparent front panel or an opening in front of each vial receptacle for additional verification of reagent labels; a rack cover with rows of circular indentations, with or without a disposable lining, for use as shallow reaction dishes for qualitative or quantitative chemical assays, such as pH testing.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: August 21, 2018
    Assignee: RACK ON INC.
    Inventors: Johanna Kantor, William F. Stewart
  • Publication number: 20170361325
    Abstract: An ergonomic vial and tube rack is disclosed for retaining a plurality of vials or tubes containing fluid therein in inclined or vertical upright positions, features of which a mechanism for a variable incline angle; lid/cap receptacles positioned either on a shelf above the vial holders or inside the cover when in an open position; an ice or heat pack compartment or a sealed compartment underneath the vials and/or behind the vials for the limited temperature control; rack to rack pin-to-hole locators for stackability, ease of transportation, and storage; color-coding of vial racks for convenience and work-flow assistance; a transparent front panel or an opening in front of each vial receptacle for additional verification of reagent labels; a rack cover with rows of circular indentations, with or without a disposable lining, for use as shallow reaction dishes for qualitative or quantitative chemical assays, such as pH testing.
    Type: Application
    Filed: May 11, 2017
    Publication date: December 21, 2017
    Inventors: Johanna KANTOR, William F. STEWART
  • Patent number: 4189865
    Abstract: Process for growing sprouts from seeds comprises circulating the water in which the seeds are germinated continuously for 8 hours so that the seeds are continually germinating in fresh water. The germinated sprouts are then repeatedly allowed to drain and stand for approximately 4-8 hours and then soaked for approximately 15 minutes. For the first 48 hours the sprouts are lightly worked during the soakings by being separated by the user's fingers. Between 48 and 72 hours the sprouts are heavily worked and are submerged during the soaking cycle, and the floating husks are removed from the container in which the sprouts are soaked by skimming the container while the sprouts are submerged. Between 72 and 144 hours, in addition to the skimming, after each soaking the sprouts are removed from the container and the container cleaned. Also after 72 hours and 96 hours the sprouts in each container are split in approximately equal portions and each of the portions are placed in separate containers.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: February 26, 1980
    Inventors: William F. Stewart, Charles W. Baldwin
  • Patent number: D818748
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: May 29, 2018
    Assignee: RACK ON INC.
    Inventors: William F. Stewart, Johanna Kantor