Patents by Inventor Mildred M. LiPuma

Mildred M. LiPuma 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).

  • Preparation of catalyst supports and materials produced thereby
    Patent number: 4581338
    Abstract: A process for the formation of a spherical catalyst support comprising the steps of:(a) forming a mixture comprising:(i) 30-85 wt. % diatomite;(ii) 15-40 wt. % solvent;(iii) 0-15 wt. % fluxing agent; and(iv) 0-15 wt. % organic burnout material;(b) forming said mixture into generally spherical balls;(c) calcining said balls at a temperature in the range of about 700.degree. to 2300.degree. F. for about 10-45 minutes; and(d) thereafter, depositing at least one catalytically active substance on the surface of said spherical support in any suitable manner.The spherical support produced by the above process is especially useful as a support for immobilizing enzymes and microbial cells.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: April 8, 1986
    Assignee: Manville Service Corporation
    Inventors: John S. Robertson, Mildred M. LiPuma, Stephen E. Gross