Herpes subunit vaccine
CA 1114294 A · Owner: Merck & Co. Inc. · Inventors: Lehman, Ernest D.; Larson, Vivian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herpes virus subunit antigens suitable for vaccine use are prepared by (1) treating virus-infected cells with a surfactant and varying concentrations of salt to extract and solubilize viral-directed glycoproteins, (2) fractionating the solubilized material by chromatographic procedures to enrich the viral-directed glycoproteins and to remove unwanted proteins and nucleic acids and, (3) optionally treating the subunit antigens with deoxyribonuclease and formaldehyde to assure safety.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.