DC

Don Coppersmith

IBM: 22 patents #4,909 of 70,183Top 7%
Overall (All Time): #198,323 of 4,157,543Top 5%
22
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7236592 Efficient stream cipher system and method Shai Halevi, Charanjit Singh Jutla 2007-06-26
7100050 Secured signal modification and verification with privacy control Frederick C. Mintzer, Charles P. Tresser, Samuel Weber, Chai Wah Wu, Minerva M. Yeung 2006-08-29
6996543 System for protection of goods against counterfeiting Claude A. Greengard, Charles P. Tresser, Chai Wah Wu 2006-02-07
6301362 Method and apparatus for cryptographically transforming an input block into an output block Stephen M. Matyas, Donald B. Johnson 2001-10-09
6256736 Secured signal modification and verification with privacy control Frederick C. Mintzer, Charles P. Tresser, Chai Wah Wu, Minerva M. Yeung 2001-07-03
6243470 Method and apparatus for advanced symmetric key block cipher with variable length key and block Rosario Gennaro, Shai Halevi, Charanjit Singh Jutla, Stephen M. Matyas, Mohammed Peyravian +2 more 2001-06-05
6192129 Method and apparatus for advanced byte-oriented symmetric key block cipher with variable length key and block Rosario Gennaro, Shai Halevi, Charanjit Singh Jutla, Stephen M. Matyas, Mohammed Peyravian +2 more 2001-02-20
6189095 Symmetric block cipher using multiple stages with modified type-1 and type-3 feistel networks Rosario Gennaro, Shai Halevi, Charanjit Singh Jutla, Stephen M. Matyas, Luke O'Connor +3 more 2001-02-13
6185679 Method and apparatus for a symmetric block cipher using multiple stages with type-1 and type-3 feistel networks Rosario Gennaro, Shai Halevi, Charanjit Singh Jutla, Stephen M. Matyas, Luke O'Connor +3 more 2001-02-06
6185304 Method and apparatus for a symmetric block cipher using multiple stages Rosario Gennaro, Shai Halevi, Charanjit Singh Jutla, Stephen M. Matyas, Luke O'Connor +3 more 2001-02-06
6101275 Method for finding a best test for a nominal attribute for generating a binary decision tree Se J. Hong, Jonathan R. M. Hosking 2000-08-08
6069955 System for protection of goods against counterfeiting Claude A. Greengard, Charles P. Tresser, Chai Wah Wu 2000-05-30
5835597 Software-efficient pseudorandom function and the use thereof for decryption Phillip Rogaway 1998-11-10
5796827 System and method for near-field human-body coupling for encrypted communication with identification cards Prabhakar Raghavan, Thomas G. Zimmerman 1998-08-18
5768390 Cryptographic system with masking Donald B. Johnson, Stephen M. Matyas 1998-06-16
5675652 Computer readable device implementing a software-efficient pseudorandom function encryption Phillip Rogaway 1997-10-07
5661807 Authentication system using one-time passwords Richard Henry Guski, Raymond Craig Larson, Stephen M. Matyas, Donald B. Johnson 1997-08-26
5592553 Authentication system using one-time passwords Richard Henry Guski, Raymond Craig Larson, Stephen M. Matyas, Donald B. Johnson 1997-01-07
5454039 Software-efficient pseudorandom function and the use thereof for encryption Phillip Rogaway 1995-09-26
4908861 Data authentication using modification detection codes based on a public one way encryption function Bruno O. Brachtl, Myrna M. Hyden, Stephen M. Matyas, Carl H. W. Meyer, Jonathan Oseas +2 more 1990-03-13
4675650 Run-length limited code without DC level Bruce P. Kitchens 1987-06-23
4564944 Error correcting scheme Richard F. Arnold, John Cocke, Adrian E. Seigler, Gary E. Strait 1986-01-14