Computer program protection method
Patent 4462078 Issued on July 24, 1984. Estimated Expiration Date: 
August 2, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 2, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCrypto microprocessor for executing enciphered programs Patent #: 4278837 InventorApplicationNo. 06/404135 filed on 08/02/1982US Classes:726/32, Copy detection360/60, Recording-or erasing-prevention705/57Copy protection or preventionExaminersPrimary: Zache, Raulfe B.Attorney, Agent or FirmInternational ClassesG06F 1/00 (20060101)G06F 21/00 (20060101) AbstractA computer program protection method which permits copying of the program by a user, but which incorporates a novel information coding technique to prevent operational response by the computer using a copy. | |
