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| Number | Title | Issue Date |
| 5495531 | Equipment which included electronics To enable control to be exercised over the use of equipment, a chip is built into the electronic circuitry of the equipment which chip has stored therein a series of pseudo-random numbers. When a crypto unit of the chip receives a first number generated b... | 02/27/1996 |
| 5490216 | System for software registration A registration system allows digital data or software to run in a use mode on a platform if and only if an appropriate licensing procedure has been followed. Preferably, the system detects when part of the platform on which the digital data has been loade... | 02/06/1996 |
| 5483658 | Detection of unauthorized use of software applications in processing devices A monitoring computer monitors the communications occurring within at least one communication system for at least one unique processing device identification code associated with a processing device. Upon detecting the at least one device identification c... | 01/09/1996 |
| 5473692 | Roving software license for a hardware agent An integrated circuit component for enforcing licensing restrictions. Such enforcement is performed through remote transmission of access privileges for executing a licensed program from the integrated circuit component to another similar component. The i... | 12/05/1995 |
| 5438508 | License document interchange format for license management system A distributed computer system employs a license management system to account for software product usage. A management policy having a variety of alternative styles and contexts is provided. Each licensed product upon start-up makes a call to a license ser... | 08/01/1995 |
| 5371792 | CD-ROM disk and security check method for the same A CD-ROM disk comprises an identifier region having a disk identifier recorded in and a security code region having a security code recorded in. The identifier region and the security code region are provided in one sector of a boot sector to be read when... | 12/06/1994 |
| 5343526 | Method for establishing licensor changeable limits on software usage A system and method for establishing licensor changeable limits on shared software usage without the licensor having access to the system on which the shared software is running. An encrypted numerical limit value is embedded in the licensed software (pro... | 08/30/1994 |
| 5343524 | Intelligent security device An intelligent security device (10) is disclosed for protecting computer software from unauthorized use. The security device (10) is a hardware device having within a microprocessor (36) for interacting with a host computer (32) such that protected softwa... | 08/30/1994 |
| 5287408 | Apparatus and method for serializing and validating copies of computer software An apparatus and method of disabling an unauthorized copy of a computer program. A set of numbers having an uncommon mathematical property is defined. For authorized copies, one of these numbers is written to a pre-determined location in the computer prog... | 02/15/1994 |
| 5276738 | Software data protection mechanism A protection mechanism includes means for taking an input binary value and generating a unique key value as well as performing the reverse operation of taking a key value and generating an input binary value. The mechanism includes a scrambler which inclu... | 01/04/1994 |
| 5260999 | Filters in license management system A distributed computer system employs a license management system to account for software product usage. A management policy having a variety of alternative styles and contexts is provided. Each licensed product upon start-up makes a call to a license ser... | 11/09/1993 |
| 5222134 | Secure system for activating personal computer software at remote locations A process and system for activating various programs are provided in a personal computer. The computer is initially provided with a registration shell. A data link is established between the personal computer and a registration computer. By providing the ... | 06/22/1993 |
| 5204897 | Management interface for license management system A distributed computer system employs a license management system to account for software product usage. A management policy having a variety of alternative styles and contexts is provided. Each licensed product upon start-up makes a call to a license ser... | 04/20/1993 |
| 5182770 | System and apparatus for protecting computer software An integrated software piracy prevention system incorporates several characteristic identification codes identifying installation and software components. A separate security device is attached to and in communication with the protected computer system. I... | 01/26/1993 |
| 5138712 | Apparatus and method for licensing software on a network of computers The present invention provides to the software application the verification and license check out functions which are normally performed by a license server of a network software license system. The encrypted license information is contained in a license ... | 08/11/1992 |
| 5103476 | Secure system for activating personal computer software at remote locations A process and system for activating various programs are provided in a personal computer. The computer is initially provided with a portion of a main program. A data link is established between the personal computer and a registration computer. By providi... | 04/07/1992 |
| 5014234 | System with software usage timer and counter for allowing limited use but preventing continued unauthorized use of protected software A method is provided to prevent continued unauthorized use of protected software and to maintain control of sites where software is installed. The method allows unauthorized copies of the protected software to be installed and to operate for a limited tim... | 05/07/1991 |
| 4953209 | Self-verifying receipt and acceptance system for electronically delivered data objects A system for electronically transmitting data objects such as computer programs with a means for verifying that the computer program was actually received and the terms and conditions of its use accepted by the receiver is presented. In this system, the c... | 08/28/1990 |
| 4941175 | Tamper-resistant method for authorizing access to data between a host and a predetermined number of attached workstations A tamper-resistant method is disclosed for controlling the number of users given authorized access to licensed software in a host-based, multiple terminal system by use of an encrypted authorization list depth parameter. The method embedded in the host-li... | 07/10/1990 |
| 4937863 | Software licensing management system A license management system which includes a license management facility that determines whether usage of a licensed program is within the scope of the license. The license management system maintains a license unit value for each licensed program and a p... | 06/26/1990 |
| 4924378 | License mangagement system and license storage key A license storage key is provided for securely storing information regarding which licenses have been purchased for a network of computers, how many of each license have been purhcased, and any time limits associated with each license. An application prog... | 05/08/1990 |
| 4791565 | Apparatus for controlling the use of computer software Apparatus for controlling the use of software in accordance with authorized software license limits, including a limit of the number of concurrent usages of a particular software in a computer system having one or more operator terminals and a central pro... | 12/13/1988 |
| 4683968 | System for preventing software piracy employing multi-encrypted keys and single decryption circuit modules A system which enables a protected program to run only a selected plurality of computers includes a respective unique key Ki for each computer of the plurality, the key being triple encrypted in the form EFK [EKi [EFK [Ki]... | 08/04/1987 |
| 4685055 | Method and system for controlling use of protected software A protection subroutine with a unique reference code is emplaced in a protected software package. The package also contains a validation program. The protection subroutine and validation program connect with an ESD and both the ESD and the program communi... | 08/04/1987 |
| 4471163 | Software protection system A protection system for controlling the operation of a digital computer as to a particular program wherein a program "lock" interfaces with the computer and authorizes the operation in response only to a selected relation between a number in the program, ... | 09/11/1984 |
| 4462076 | Video game cartridge recognition and security system A security system for ascertaining the authenticity of removable video game cartridges adapted to interface with a video game system having a CPU. The system includes the comparison of the contents of predetermined addresses in the memory unit of the game... | 07/24/1984 |
