B26F 1/28
By electrical discharges
Official title: by electrical discharges
B26F1/28 (By electrical discharges) appears on 52 US grants and 27 published applications in this corpus.
Search patents in B26F- Granted patents
- 52
- Published applications
- 27
- Assignees
- 24
- Inventors
- 89
- Latest grant
- 18 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 0 | 2 |
| 2013 | 1 | 6 |
| 2014 | 2 | 3 |
| 2015 | 3 | 1 |
| 2016 | 1 | 3 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for making a nanopore in a membrane using an electric field applied via a conductive tip18 Jan 2022US 11,224,842 B2The Royal Institution for the Advancement of Learning/Mcgill University
- Through-hole forming method, through-hole forming apparatus, and method of manufacturing glass substrate provided with through-hole12 Feb 2019US 10,201,867 B2AGC Inc.
- Apparatus using electrochemical discharge machining process and method using the same29 May 2018US 9,981,401 B2Foundation of Soongsil University-Industry Cooperation
- Systems for and methods of manufacturing micro-structures2 Jan 2018US 9,855,687 B2
- Method of introducing a structure in a substrate30 Aug 2016US 9,427,885 B2picoDrill SA
- Method and apparatus for making a nanopore in a membrane using an electric field applied via a conductive tip20 Feb 2020US 2020/0054999 A1The Royal Institution for the Advancement of Learning/Mcgill University
- Through-hole forming method, through-hole forming apparatus, and method of manufacturing glass substrate provided with through-hole25 Apr 2019US 2019/0118281 A1AGC Inc.
- Systems and methods for biaxial symmetric canted holes17 Aug 2017US 2017/0232513 A1The Boeing Company
- Through-hole forming method, through-hole forming apparatus, and method of manufacturing glass substrate provided with through-hole16 Jun 2016US 2016/0168006 A1Asahi Glass Company, Limited
- Apparatus using electrochemical discharge machining process and method using the same2 Jun 2016US 2016/0151849 A1Foundation of Soongsil University-Industry Cooperation
Most cited
By later US patents
- Corona treatment of perforated film44US 4,351,784 AEthyl Corporation · 1982
- Process for producing contact lens32US 4,909,896 AHoya Corporation · 1990
- Process for fabricating arbitrarily shaped through holes in a component29US 4,871,418 AInternational Business Machines Corporation · 1989
- Apparatus for perforating a moving web28US 4,219,727 AMolins Limited · 1980
- Porous film and porous film manufacturing apparatus24US 5,352,108 A1994