Inventor · disambiguated record
Butler W. Lampson
Also filed as: LAMPSON BUTLER · LAMPSON BUTLER W · LAMPSON BUTLER WRIGHT · RIDER RONALD E
54 granted patents·5 pending applications·8,747 citations·filing 1975–2016
99Inventor score
Files withMICROSOFT CORP33DIGITAL EQUIPMENT CORP15XEROX CORP5MICROSOFT TECHNOLOGY LICENSING LLC2COMPAQ COMPUTER CORP1
Top patents by PatentIndex Score
59 records- 0199US6330670B1Digital rights management operating systemMICROSOFT CORP·Filed 1999·Granted Dec 11, 2001·835 cites·24 claims
- 0299US6327652B1Loading and identifying a digital rights management operating systemMICROSOFT CORP·Filed 1999·Granted Dec 4, 2001·746 cites·31 claims
- 0399US5235642AAccess control subsystem and method for distributed computer system using locally cached authentication credentialsDIGITAL EQUIPMENT CORP·Filed 1992·Granted Aug 10, 1993·709 cites·9 claims
- 0498US5224163AMethod for delegating authorization from one entity to another through the use of session encryption keysDIGITAL EQUIPMENT CORP·Filed 1990·Granted Jun 29, 1993·513 cites·15 claims
- 0598US4558413ASoftware version management systemXEROX CORP·Filed 1983·Granted Dec 10, 1985·1.5k cites·6 claims
- 0697US6651171B1Secure execution of program codeMICROSOFT CORP·Filed 1999·Granted Nov 18, 2003·315 cites·70 claims
- 0797US4063220AMultipoint data communication system with collision detectionXEROX CORP·Filed 1975·Granted Dec 13, 1977·423 cites·22 claims
- 0896US7302709B2Key-based secure storageMICROSOFT CORP·Filed 2005·Granted Nov 27, 2007·39 cites·4 claims
- 0996US6788815B2System and method for accepting disparate types of user inputMICROSOFT CORP·Filed 2001·Granted Sep 7, 2004·144 cites·18 claims
- 1096US5475819ADistributed configuration profile for computing systemDIGITAL EQUIPMENT CORP·Filed 1994·Granted Dec 12, 1995·509 cites·10 claims
- 1196US5315657ACompound principals in access control listsDIGITAL EQUIPMENT CORP·Filed 1990·Granted May 24, 1994·303 cites·8 claims
- 1295US5497421AMethod and apparatus for protecting the confidentiality of passwords in a distributed data processing systemDIGITAL EQUIPMENT CORP·Filed 1994·Granted Mar 5, 1996·254 cites·7 claims
- 1394US7415620B2System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third partyMICROSOFT CORP·Filed 2006·Granted Aug 19, 2008·30 cites·22 claims
- 1494US6820063B1Controlling access to content based on certificates and access predicatesMICROSOFT CORP·Filed 1999·Granted Nov 16, 2004·233 cites·36 claims
- 1594US5418854AMethod and apparatus for protecting the confidentiality of passwords in a distributed data processing systemDIGITAL EQUIPMENT CORP·Filed 1992·Granted May 23, 1995·235 cites·13 claims
- 1694US5210795ASecure user authentication from personal computerDIGITAL EQUIPMENT CORP·Filed 1992·Granted May 11, 1993·202 cites·14 claims
- 1793US7752442B2Virtual distributed security systemMICROSOFT CORP·Filed 2005·Granted Jul 6, 2010·28 cites·20 claims
- 1892US7194092B1Key-based secure storageMICROSOFT CORP·Filed 1999·Granted Mar 20, 2007·113 cites·16 claims
- 1991US4079458AHigh resolution character generatorXEROX CORP·Filed 1976·Granted Mar 14, 1978·49 cites·16 claims
- 2090US7020772B2Secure execution of program codeMICROSOFT CORP·Filed 2003·Granted Mar 28, 2006·54 cites·60 claims
- 2190US5488716AFault tolerant computer system with shadow virtual processorDIGITAL EQUIPMENT CORP·Filed 1994·Granted Jan 30, 1996·197 cites·16 claims
- 2289US7543336B2System and method for secure storage of data using public and private keysMICROSOFT CORP·Filed 2003·Granted Jun 2, 2009·35 cites·49 claims
- 2389US7529919B2Boot blocks for softwareMICROSOFT CORP·Filed 2003·Granted May 5, 2009·35 cites·57 claims
- 2489US5335343ADistributed transaction processing using two-phase commit protocol with presumed-commit without log forceDIGITAL EQUIPMENT CORP·Filed 1992·Granted Aug 2, 1994·136 cites·11 claims
- 2589US5161193APipelined cryptography processor and method for its use in communication networksDIGITAL EQUIPMENT CORP·Filed 1990·Granted Nov 3, 1992·168 cites·15 claims
- 2687US7319454B2Two-button mouse input using a stylusMICROSOFT CORP·Filed 2001·Granted Jan 15, 2008·54 cites·30 claims
- 2787US4203154AElectronic image processing systemXEROX CORP·Filed 1978·Granted May 13, 1980·56 cites·9 claims
- 2885US7174457B1System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third partyMICROSOFT CORP·Filed 1999·Granted Feb 6, 2007·82 cites·16 claims
- 2984US6976175B2Hierarchical trusted code for content protection in computersMICROSOFT CORP·Filed 2004·Granted Dec 13, 2005·18 cites·29 claims
- 3083US6775779B1Hierarchical trusted code for content protection in computersMICROSOFT CORP·Filed 1999·Granted Aug 10, 2004·227 cites·59 claims
- 3177US7434263B2System and method for secure storage data using a keyMICROSOFT CORP·Filed 2003·Granted Oct 7, 2008·14 cites·56 claims
- 3277US5268962AComputer network with modified host-to-host encryption keysDIGITAL EQUIPMENT CORP·Filed 1992·Granted Dec 7, 1993·85 cites·26 claims
- 3376US6986059B2Hierarchical trusted code for content protection in computersMICROSOFT CORP·Filed 2004·Granted Jan 10, 2006·15 cites·29 claims
- 3475US7809938B2Virtual distributed security systemMICROSOFT CORP·Filed 2005·Granted Oct 5, 2010·4 cites·20 claims
- 3574US5594869AMethod and apparatus for end-to-end encryption of a data packet in a computer networkDIGITAL EQUIPMENT CORP·Filed 1995·Granted Jan 14, 1997·88 cites·8 claims
- 3673US8302149B2Virtual distributed security systemDELLA-LIBERA GIOVANNI M·Filed 2005·Granted Oct 30, 2012·4 cites·17 claims
- 3773US7900248B2Access control negation using negative groupsMICROSOFT CORP·Filed 2007·Granted Mar 1, 2011·7 cites·20 claims
- 3873US7496769B2Hierarchical trusted code for content protection in computersMICROSOFT CORP·Filed 2004·Granted Feb 24, 2009·12 cites·37 claims
- 3973US7356682B2Attesting to a value of a register and/or memory regionMICROSOFT CORP·Filed 2003·Granted Apr 8, 2008·12 cites·16 claims
- 4072US9400639B2Generating programs using context-free compositions and probability of determined transformation rulesKALAI ADAM·Filed 2012·Granted Jul 26, 2016·10 cites·20 claims
- 4172US5235644AProbabilistic cryptographic processing methodDIGITAL EQUIPMENT CORP·Filed 1990·Granted Aug 10, 1993·65 cites·20 claims
- 4271US7752431B2Virtual distributed security systemMICROSOFT CORP·Filed 2005·Granted Jul 6, 2010·3 cites·20 claims
- 4370US9253195B2Transformation of sequential access control lists utilizing certificatesMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2013·Granted Feb 2, 2016·2 cites·20 claims
- 4470US5339313AMethod and apparatus for traffic congestion control in a communication network bridge deviceDIGITAL EQUIPMENT CORP·Filed 1991·Granted Aug 16, 1994·62 cites·16 claims
- 4570US4152697AParallel run-length decoderXEROX CORP·Filed 1976·Granted May 1, 1979·18 cites·9 claims
- 4668US7424606B2System and method for authenticating an operating systemMICROSOFT CORP·Filed 2003·Granted Sep 9, 2008·7 cites·39 claims
- 4767US8468579B2Transformation of sequential access control lists utilizing certificatesELLISON CARL MELVIN·Filed 2007·Granted Jun 18, 2013·3 cites·20 claims
- 4867US7457412B2System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third partyMICROSOFT CORP·Filed 2006·Granted Nov 25, 2008·2 cites·23 claims
- 4966US9940106B2Generating programs using context-free compositions and probability of determined transformation rulesMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2016·Granted Apr 10, 2018·1 cites·17 claims
- 5066US7418137B2System and method for accepting disparate types of user inputMICROSOFT CORP·Filed 2004·Granted Aug 26, 2008·11 cites·14 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →