Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 5237614 | Integrated network security system An integrated network security system is provided which permits log-on to a normally locked client on the network in response to at least one coded non-public input to the client by a user. At least a selected portion of the coded input is encrypted and s... | 08/17/1993 |
| 5202983 | File accessing system using code name to access selected conversion table for converting simplified file name into original file name In a file-accessing system for use in an information-processing apparatus, an original file name and its simplified file name constitute one piece of conversion data. One or a plurality pieces of such conversion data are prepared. A conversion rule is pre... | 04/13/1993 |
| 5144659 | Computer file protection system The invention is a system for protecting the security of computer files. It has hardware elements, including a programmable auxiliary memory and control unit along with associated software elements. The security subsystem is installed on the host computer... | 09/01/1992 |
| 5077795 | Security system for electronic printing systems An electronic printing system with a security system for protecting the security of a user's files and programs through the intermediary of a user profile for each user administered to by a Security administrator at the site or from a remote site.... | 12/31/1991 |
| 5052040 | Multiple user stored data cryptographic labeling system and method There is disclosed a system and method of extending the labels on an encryption technique so that different users can utilize the same files under different rights established by both the user and the system administrator. This system and method take adva... | 09/24/1991 |
| 5018096 | Security administrator for automatically updating security levels associated with operator personal identification data A check memory stores the data to limit a range of terminal devices usable by operators and a range of items accessible by operators, such as files, data and application programs. When an operator operates a computer system, he enters his personal identif... | 05/21/1991 |
| 5007082 | Computer software encryption apparatus Data security is provided using an encryption/decryption algorithm which attaches at the primitive BIOS level of the operating system automatically during the power-on self-test routines. The encryption/decryption process is implemented by intercepting th... | 04/09/1991 |
| 4984272 | Secure file handling in a computer operating system A method for administering secure access to files of a computer system. For a process-file pair, a first security label associated with the process is compared with a second security label associated with the file in response to a request to read or write... | 01/08/1991 |
| 4918728 | Data cryptography operations using control vectors Data cryptography is achieved in an improved manner by associating with the data cryptography key, a control vector which provides the authorization for the uses of the key intended by the originator of the key. Among the uses specified by the control vec... | 04/17/1990 |
| 4916738 | Remote access terminal security The invention provides a method of securing remote terminal access to a central computer. The method uses the services of a physically secure coprocessor which is, or will be, coupled to the remote terminal for the purposes of effecting remote access to t... | 04/10/1990 |
| 4907268 | Methods and apparatus for controlling access to information processed a multi-user-accessible digital computer Method and apparatus are disclosed for controlling access to information borne by information records installed in information recorders, which information recorders constitute a part of at least one digital computer system. The digital computer system is... | 03/06/1990 |
| 4864616 | Cryptographic labeling of electronically stored data A method of cryptographically labeling electronically stored data is provided as part of a security system for personal computers. In protecting sensitive files of data, the labeling method utilizes a plurality of key streams, which are long, relatively p... | 09/05/1989 |
| 4757533 | Security system for microcomputers A security system for a personal computer, in which hardware and software are combined to provide a tamper-proof manner of protecting user-access and file-access. The hardware component of the system is an expansion board for insertion into an expansion s... | 07/12/1988 |
| 4713753 | Secure data processing system architecture with format control Means and methods of securing protected system files in a data processing system are disclosed, wherein the information determining access rights of system users to the protected systems files remains at all times within a secure processor. Provision is a... | 12/15/1987 |
| 4588991 | File access security method and means An improved file access security technique and associated apparatus accesses data which is stored in encrypted form under one encryption key and re-stores the data re-encrypted under another encryption key, and produces a record of each access and data re... | 05/13/1986 |
| 4375579 | Database encryption and decryption circuit and method using subkeys An encryption and decryption circuit and method using subkeys which is therefore particularly useful for the encryption and decryption of database information. Each data field has a corresponding write key and a different read key. A database record is en... | 03/01/1983 |
| 4238854 | Cryptographic file security for single domain networks A file security system for data files associated with a host data processing system. The host system includes a data security device which contains a secure host master key and is capable of performing a variety of cryptographic operations. At initializat... | 12/09/1980 |
| 4203166 | Cryptographic file security for multiple domain networks A file security system for data files created at a first host system in one domain and recovered at a second host system in another domain of a multiple domain network. Each of said host systems contain a data security device provided with multiple host k... | 05/13/1980 |
