Patents by Inventor Richard Eugene Keefer

Richard Eugene Keefer 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: 5726360
    Abstract: To draw samples of fluid at remote locations, one of a plurality of sampler configurations is selected from configuations that have a universal base, a selected one of a composite container holder or locator, 12-container rain water runoff container holder and sequential sample multiple container holder; clampdown, control section and cover. The selected configuration is brought to the remote site. Samples are drawn at the site in a predetermined time sequence. After a sequence is completed, a new selected container carrier is put into an insulated shipping carton with ice and containers and brought to the site. At the site, the old container holder is removed and the ice is poured into the shipping carton. The new container carrier is inserted into the sampler and ice put in with it. The old container carrier with sample in the containers is put into the shipping carton with the remaining ice and brought to the laboratory.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: March 10, 1998
    Assignee: Isco, Inc.
    Inventor: Richard Eugene Keefer