G07D 7/023
Measuring conductivity by direct contact
G07D7/023 (Measuring conductivity by direct contact) appears on 11 US grants and 6 published applications in this corpus.
Search patents in G07D- Granted patents
- 11
- Published applications
- 6
- Assignees
- 9
- Inventors
- 34
- Latest grant
- 10 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Doqumint technology: counterfeit resistant documentation10 Jan 2023US 11,548,309 B2
- Banknote foreign object detection using pressure sensing array25 Dec 2018US 10,160,614 B1NCR Corporation
- Label with graphene layer and system for authentication of label19 Jun 2018US 10,002,317 B1Brady Worldwide, Inc.
- Apparatus for checking banknotes3 Nov 2015US 9,177,432 B2Giesecke & Devrient GmbH
- Surface-modified fluorescent carbon nanotubes for product verification14 Apr 2015US 9,006,667 B2International Business Machines Corporation
- Anti-counterfeiting object, method for manufacturing same, and use thereof10 Apr 2025US 2025/0116619 A1
- Doqumint Technology: Counterfeit Resistant Documentation30 Dec 2021US 2021/0402822 A1
- Surface-modified fluorescent carbon nanotubes for product verification3 Oct 2013US 2013/0256529 A1International Business Machines Corporation
- Apparatus for Checking Banknotes6 Nov 2008US 2008/0271973 A1Giesecke & Devrient GmbH
- Paper-or Cardboard-Based Security Product1 May 2008US 2008/0102257 A1
Most cited
By later US patents
- Combined conductivity and magnetic currency validator160US 5,261,518 ABrandt, Inc. · 1993
- Demand publishing royalty accounting system65US 4,179,212 AXerox Corporation · 1979
- Apparatus for detecting electrically conductive coatings on documents36US 4,313,087 A1982
- Security document having an electrically conductive security element embedded therein22US 5,112,672 AGAO Gesellschaft fur Automation und Organisation mbH · 1992
- Money validators16US 5,462,149 AMars, Incorporated · 1995