Y10T 74/2156
Weight type
Y10T74/2156 (Weight type) appears on 65 US grants and 11 published applications in this corpus.
Search patents in Y10T- Granted patents
- 65
- Published applications
- 11
- Assignees
- 40
- Inventors
- 96
- Latest grant
- 6 Feb 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 2 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Pumping unit and counterbalance system for pumping units6 Feb 2018US 9,885,349 B2Guidemaster Manufacturing Corp.
- Counterbalance system for pumping units13 Oct 2015US 9,157,431 B2
- Cross-jack counterbalance system10 Feb 2015US 8,950,473 B2
- Countershaft27 Jan 2015US 8,939,123 B2Herzog Intertec GmbH
- Balancing shaft9 Apr 2013US 8,413,629 B2Herzog Intertec GmbH
- Pumping Unit and Counterbalance System for Pumping Units6 Aug 2015US 2015/0219090 A1Guidemaster Manufacturing Corp.
- Counterbalance system for pumping units31 Oct 2013US 2013/0283968 A1Guidemaster Manufacturing Corp.
- Countershaft24 May 2012US 2012/0125281 A1Herzog Intertec GmbH
- Cross-Jack Counterbalance System29 Dec 2011US 2011/0314959 A1
- Balancing shaft5 Aug 2010US 2010/0192894 A1Herzog Intertec GmbH
Most cited
By later US patents
- Power transmission device97US 5,237,884 AOsada Research Institute, Ltd. · 1993
- Balanced variable wobble plate drive39US 4,235,116 AU. S. Philips Corporation · 1980
- Hydraulically operated oil well pump jack34US 4,099,447 AAda Pumps, Inc. · 1978
- Self-compensating oscillatory pump control31US 4,534,706 AArmco Inc. · 1985
- Reciprocating machines with both primary and secondary counter rotating balancers25US 4,509,378 A1985