CK

Charles W. Kaufman

EC Emc Ip Holding Company: 20 patents #182 of 4,608Top 4%
DE Digital Equipment: 17 patents #21 of 2,100Top 1%
Microsoft: 15 patents #2,618 of 40,388Top 7%
IBM: 14 patents #8,004 of 70,183Top 15%
DP Dell Products: 3 patents #1,932 of 6,820Top 30%
LD Lotus Development: 2 patents #1 of 44Top 3%
CS Cabletron Systems: 1 patents #92 of 189Top 50%
CC Compaq Computer: 1 patents #854 of 1,604Top 55%
📍 Redmond, WA: #39 of 8,547 inventorsTop 1%
🗺 Washington: #480 of 76,902 inventorsTop 1%
Overall (All Time): #24,226 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 1–25 of 77 patents

Patent #TitleCo-InventorsDate
12346267 Systems and methods of supporting deduplication and compression of encrypted storage volumes Xuan Tang, George B. Papadopoulos, Vasu Subramanian, Jamie Pocas, Naizhong Chiu +1 more 2025-07-01
12288214 Secure, low-cost, privacy-preserving biometric card Radia J. Perlman 2025-04-29
12022003 Safe use of legacy digital signatures in a post-quantum world Radia J. Perlman 2024-06-25
11831634 Managing trusted communications between server and clients Dmitry Tylik, Gregory W. Lazar, Marco Abela, Jingyan Zhao 2023-11-28
11720270 Client-side compression Senthil Ponnuswamy, Radia J. Perlman 2023-08-08
11595190 Encrypted data storage system Radia J. Perlman 2023-02-28
11550919 Prioritizing patching of vulnerable components Danny V. Dhillon, Eric Baize 2023-01-10
11436345 Protection of secret client data in a multiple client data deduplication environment Radia J. Perlman 2022-09-06
11435907 Ensuring data authenticity using notary as a service Yossef Saad, Radia J. Perlman 2022-09-06
11374769 Efficient and secure distributed ledger maintenance Radia J. Perlman 2022-06-28
11321443 Password resetting system and method Jackson Brandon Myers, Gregory W. Lazar 2022-05-03
11290276 Method and system for a signed document validity service Radia J. Perlman 2022-03-29
11240005 Method and system for querying a secure database located on an untrusted device Radia J. Perlman 2022-02-01
11153094 Secure data deduplication with smaller hash values 2021-10-19
11128460 Client-side encryption supporting deduplication across single or multiple tenants in a storage system Radia J. Perlman, Xuan Tang 2021-09-21
11019033 Trust domain secure enclaves in cloud infrastructure Radia J. Perlman 2021-05-25
10860226 Systems and methods of synchronizing configuration information in a clustered storage environment Ping Zhang, Gregory W. Lazar, Xuan Tang, Yi Fang, Xiongfei Chen 2020-12-08
10764068 Computer system employing challenge/response protocol with detection of non-unique incorrect responses Radia J. Perlman, Xuan Tang 2020-09-01
10756904 Efficient and secure distributed ledger maintenance Radia J. Perlman 2020-08-25
10680813 Crypto-erasure resilient to network outage 2020-06-09
10394646 Incremental data validation Radia J. Perlman 2019-08-27
10298551 Privacy-preserving policy enforcement for messaging Radia J. Perlman, Xuan Tang 2019-05-21
10205594 Crypto-erasure resilient to network outage 2019-02-12
9467473 System and method for compact form exhaustive analysis of security policies Karthick Jayaraman, Nikolaj S. Bjorner 2016-10-11
9253195 Transformation of sequential access control lists utilizing certificates Carl M. Ellison, Paul J. Leach, Butler W. Lampson, Melissa W. Dunn, Ravindra Nath Pandya 2016-02-02