G01L 21/24
Using rotating members
Official title: using rotating members; Vacuum gauges of the Langmuir type
G01L21/24 (Using rotating members) appears on 4 US grants and 2 published applications in this corpus.
Search patents in G01L- Granted patents
- 4
- Published applications
- 2
- Assignees
- 6
- Inventors
- 9
- Latest grant
- 7 Jul 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas-friction vacuum indicator with a gas-friction sensor rotating about a fixed axis of rotation7 Jul 1998US 5,777,233 AForschungszentrum Julich GmbH
- Composite vacuum pump3 Mar 1992US 5,092,740 ANippon Ferrofluidics Corporation
- Method for the processing of measurement data in a gas friction vacuum meter and a gas friction vacuum meter equipped with a circuit for the practice of this method3 Feb 1987US 4,640,136 ALeybold-Heraeus GmbH
- Gas friction vacuum meter and method of making measuring body2 Aug 1983US 4,395,914 AKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
Most cited
By later US patents
- Composite vacuum pump12US 5,092,740 ANippon Ferrofluidics Corporation · 1992
- Gas friction vacuum meter and method of making measuring body4US 4,395,914 AKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung · 1983
- Method for the processing of measurement data in a gas friction vacuum meter and a gas friction vacuum meter equipped with a circuit for the practice of this method2US 4,640,136 ALeybold-Heraeus GmbH · 1987