Patents by Inventor Eva Tamas

Eva Tamas 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).

  • Process for the preparation of sustained release pharmaceutical compositions having a high active ingredient content
    Patent number: 4748023
    Abstract: The invention relates to a process for the preparation of sustained release solid pharmaceutical compositions having an active ingredient content of at least 80% and possessing a structure which loosens in aqueous medium but does not disintegrate to discrete particles within 4 hours which comprises coating the particles of the active ingredient in a liquid medium with a water insoluble polymer--preferably with an ethyl cellulose polymer film--and thereafter admixing the coated crystals with at least one disintegrating agent being capable of swelling in aqueous medium and other auxiliary agents conventionally used in pharmaceutical industry and pressing the mixture into tablets.The advantage of the process of the present invention is that it is readily feasible with a very wide range of active ingredients and provides sustained release tablets having a high active ingredient content.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: May 31, 1988
    Assignee: EGYT Gyogyszervegyeszeti Gyar
    Inventors: Eva Tamas, Pal Fekete, Tibor Kovacs, Denes Bezzegh, Ilona Bor nee Baumgartner, Zoltan Toth, Katalin Zukovics nee Sumeg