Inventor · disambiguated record
Walter L. Tuchman
Also filed as: TUCHMAN WALTER L · TUCHMAN WALTER LEONARD
11 granted patents·2,054 citations·filing 1975–1981
95Inventor score
Files withIBM11
Top patents by PatentIndex Score
11 records- 0198US3962539AProduct block cipher system for data securityIBM·Filed 1975·Granted Jun 8, 1976·423 cites·10 claims
- 0297US4238853ACryptographic communication security for single domain networksIBM·Filed 1977·Granted Dec 9, 1980·194 cites·49 claims
- 0397US4238854ACryptographic file security for single domain networksIBM·Filed 1977·Granted Dec 9, 1980·237 cites·42 claims
- 0497US4203166ACryptographic file security for multiple domain networksIBM·Filed 1977·Granted May 13, 1980·264 cites·43 claims
- 0597US4193131ACryptographic verification of operational keys used in communication networksIBM·Filed 1977·Granted Mar 11, 1980·176 cites·11 claims
- 0697US3958081ABlock cipher system for data securityIBM·Filed 1975·Granted May 18, 1976·266 cites·16 claims
- 0796US4227253ACryptographic communication security for multiple domain networksIBM·Filed 1977·Granted Oct 7, 1980·183 cites·47 claims
- 0895US4500750ACryptographic application for interbank verificationIBM·Filed 1981·Granted Feb 19, 1985·110 cites·25 claims
- 0992US4386234ACryptographic communication and file security using terminalsIBM·Filed 1977·Granted May 31, 1983·84 cites·46 claims
- 1088US4074066AMessage verification and transmission error detection by block chainingIBM·Filed 1976·Granted Feb 14, 1978·63 cites·12 claims
- 1187US4206315ADigital signature system and apparatusIBM·Filed 1978·Granted Jun 3, 1980·54 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →