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Class Information
Number: 380/59
Name: Cryptography > Miscellaneous
Description: Subject matter not provided for in any of the preceding subclasses.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
5764765 Method for key distribution using quantum cryptography Jun. 9, 1998
5761312 Enhanced individual intelligent communication platform for subscribers on a telephone system Jun. 2, 1998
5754653 Coding formula for verifying checks and credit cards May. 19, 1998
5748741 Encoding technique for software and hardware May. 5, 1998
5745579 Cellular telephone security adapter and method Apr. 28, 1998
5719942 System and method for establishing a communication channel over a heterogeneous network between a source node and a destination node Feb. 17, 1998
5689569 Method and device for the utilization of electrical signals Nov. 18, 1997
5675648 System and method for key distribution using quantum cryptography Oct. 7, 1997
5666417 Fluorescence authentication reader with coaxial optics Sep. 9, 1997
5647003 Method and apparatus for altering a magnetic characteristic of a medium Jul. 8, 1997
5598474 Process for encrypting a fingerprint onto an I.D. card Jan. 28, 1997
5574790 Fluorescence authentication reader with coaxial optics Nov. 12, 1996
5537476 Secure viewing of display units by image superposition and wavelength separation Jul. 16, 1996
5511125 Method and device for the utilization of electrical signals Apr. 23, 1996
5493612 Secure communication keying system Feb. 20, 1996
5488358 Electronic combination lock with closure and locking verification Jan. 30, 1996
5465301 Security threads Nov. 7, 1995
5448643 Authenticaton system Sep. 5, 1995
5436974 Method of encoding confidentiality markings Jul. 25, 1995
5418855 Authentication system and method May. 23, 1995
5396559 Anticounterfeiting method and device utilizing holograms and pseudorandom dot patterns Mar. 7, 1995
5392352 Scramble detecting circuit in a satellite broadcasting receiver and scramble detecting method Feb. 21, 1995
5337361 Record with encoded data Aug. 9, 1994
5307410 Interferometric quantum cryptographic key distribution system Apr. 26, 1994
5307414 Encryption template Apr. 26, 1994
5297800 Ultra-enigma code game Mar. 29, 1994
5243649 Apparatus and method for quantum mechanical encryption for the transmission of secure communications Sep. 7, 1993
5243655 System for encoding and decoding data in machine readable graphic form Sep. 7, 1993
5206909 Method for secure PPM-based laser communications Apr. 27, 1993
5191614 Secure communication system Mar. 2, 1993
5182772 Method and apparatus for encoding, transmitting, receiving and de-coding information Jan. 26, 1993
5140636 Interferometric optical fiber data link Aug. 18, 1992
5117457 Tamper resistant packaging for information protection in electronic circuitry May. 26, 1992
5099515 Secrecy device for wiretapping prevention and detection Mar. 24, 1992
5077796 Cryptograph Dec. 31, 1991
5055851 Vehicle location system Oct. 8, 1991
4985922 Signal and power transmission through a wall Jan. 15, 1991
4972477 Encoder/decoder Nov. 20, 1990
4957298 Permutation group games Sep. 18, 1990
4924520 Defining aircraft protocol by shorted pins May. 8, 1990
4870683 Personal identification encryptor system and method Sep. 26, 1989
4807284 Security device for sensitive data Feb. 21, 1989
4768693 Canister opener Sep. 6, 1988
4736425 Security marking method, materials provided with security marks Apr. 5, 1988
4731843 Method and device of increasing the execution speed of cipher feedback mode of the DES by an arbitrary multiplier Mar. 15, 1988
4712155 Method and apparatus for creating an artificial electron cyclotron heating region of plasma Dec. 8, 1987
4706282 Decoder for a recorder-decoder system Nov. 10, 1987
4702497 Method of encoding a symbol or message on a plastic material and an article on which a symbol has been so encoded Oct. 27, 1987
4691350 Security device for stored sensitive data Sep. 1, 1987
4688257 Secure wireless communication system utilizing locally synchronized noise signals Aug. 18, 1987

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