G07B 2017/0075
Symmetric, secret-key algorithms
Official title: {Symmetric, secret-key algorithms, e.g. DES, RC2, RC4, IDEA, Skipjack, CAST, AES}
G07B2017/0075 (Symmetric, secret-key algorithms) appears on 64 US grants and 8 published applications in this corpus.
Search patents in G07B- Granted patents
- 64
- Published applications
- 8
- Assignees
- 9
- Inventors
- 68
- Latest grant
- 28 Aug 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 0 |
| 2002 | 4 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for providing postal items with postal prepayment impressions28 Aug 2012US 8,255,334 B2Deutsche Post AG
- Mail processing system with unique mailpiece authorization assigned in advance of mailpieces entering carrier service mail processing stream15 Feb 2011US 7,890,208 B2
- Method for verifying digital franking notes25 Aug 2009US 7,580,529 B2Deutsche Post AG
- Method for the dependable transmission of service data to a terminal equipment and arrangement for implementing the method18 Aug 2009US 7,577,617 B1Francotyp-Postalia GmbH
- System and method for controlling a postage metering system using data required for printing7 Oct 2008US 7,433,849 B2Pitney Bowes Inc.
- Method for verifying the authenticity of a sender of a mail item4 Jun 2015US 2015/0154813 A1Deutsche Post AG
- Mail Processing System with Unique Mailpiece Authorization Assigned in Advance of Mailpieces Entering Carrier Service Mail Processing Stream27 Dec 2007US 2007/0299792 A1Pitney Bowes Inc.
- Method of Verifying the Validity of Digital Franking Notes and Device for Carrying Out Said Method24 Aug 2006US 2006/0190732 A1Deutsche Post AG
- Method for providing franking notes on postal items26 Feb 2004US 2004/0039714 A1
- Method for providing postal items with postal prepayment impressions12 Feb 2004US 2004/0028233 A1Deutsche Post AG
Most cited
By later US patents
- Automated transaction system with modular printhead having print authentication feature1,071US 4,864,618 AWright Technologies, L.P. · 1989
- Token generation process in an open metering system355US 5,781,438 APitney Bowes Inc. · 1998
- Automated transaction system330US 4,802,218 AWright Technologies, L.P. · 1989
- Unsecured postage applying system311US 4,831,555 APitney Bowes Inc. · 1989
- System for detecting unaccounted for printing in a value printing system246US 4,775,246 APitney Bowes Inc. · 1988