Patents by Inventor Eli V. Crisan

Eli V. Crisan 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).

  • Production and utilization of lactase
    Patent number: 4007283
    Abstract: Thermostable lactase produced by growth of thermophilic fungi, harvesting resulting mycelium, separating lactase from mycelium by radical rupture of cell structure or by subjecting cell structure to milder treatment which does not separate lactase from the structure, and separating cell debris. Resulting lactase has high degree of activity and is thermostable such that it can be used at relatively high temperatures, e.g. 60.degree. C., and at acid pH to catalyze hydrolysis of lactose to glucose and galactose.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: February 8, 1977
    Assignee: The Regents of the University of California
    Inventors: Eli V. Crisan, Steven G. Sorensen