Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8209531 | Revocation of cryptographic digital certificates | Craig B. Gentry, Zulfikar Ramzan | 2012-06-26 |
| 8156327 | Revocation of cryptographic digital certificates | Craig B. Gentry, Zulfikar Ramzan | 2012-04-10 |
| 8024562 | Revocation of cryptographic digital certificates | Craig B. Gentry, Zulfikar Ramzan | 2011-09-20 |
| 8006086 | Revocation of cryptographic digital certificates | Craig B. Gentry, Zulfikar Ramzan | 2011-08-23 |
| 7814314 | Revocation of cryptographic digital certificates | Craig B. Gentry, Zulfikar Ramzan | 2010-10-12 |
| 7747857 | Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates | Zulfikar Ramzan, Craig B. Gentry | 2010-06-29 |
| 7743252 | Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates | Zulfikar Ramzan, Craig B. Gentry | 2010-06-22 |
| 7315941 | Multi-certificate revocation using encrypted proof data for proving certificate's validity or invalidity | Zulfikar Ramzan, Craig B. Gentry | 2008-01-01 |
| 7266692 | Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates | Zulfikar Ramzan, Craig B. Gentry | 2007-09-04 |
| D357276 | Ink stylus pen | — | 1995-04-11 |
| 4729685 | Writing instrument with press mechanism and magnetic catch | Jose Navarro-Ramil, Reiner Segebarth | 1988-03-08 |
| 4669617 | Pen holder device | Juergen Boeckmann, Harald Hofmann, Anke Hoejer, Axel Mikuteit, Hans-Joachim Ritter +1 more | 1987-06-02 |
| D287603 | Writing pen | — | 1987-01-06 |
| D284582 | Fountain pen for artists and calligraphers or the like | — | 1986-07-08 |
| 4573503 | Ink dropper closure | — | 1986-03-04 |