B23B 2215/245
Pistons
B23B2215/245 (Pistons) appears on 20 US grants and 24 published applications in this corpus.
Search patents in B23B- Granted patents
- 20
- Published applications
- 24
- Assignees
- 12
- Inventors
- 46
- Latest grant
- 15 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 5 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 4 | 2 |
| 2020 | 3 | 0 |
| 2021 | 1 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine15 Aug 2023US 11,724,321 B2Enshu Co., Ltd.
- Double-sided drilling fixture for die-forged pistons and double-sided drilling process thereof3 May 2022US 11,318,544 B2Chongqing Vocational Institute of Engineering
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine26 Oct 2021US 11,154,939 B2Enshu Co., Ltd.
- Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom19 May 2020US 10,654,029 B2Univation Technologies, LLC
- Piston and method of making a piston7 Apr 2020US 10,610,984 B2Tenneco Inc.
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine30 Dec 2021US 2021/0402491 A1Enshu Co., Ltd.
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine1 Jul 2021US 2021/0197294 A1Enshu Co., Ltd.
- Double-Sided Drilling Fixture for Die-Forged Pistons and Double-Sided Drilling Process Thereof14 Jan 2021US 2021/0008645 A1Chongqing Vocational Institute of Engineering
- Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom18 Apr 2019US 2019/0111414 A1Univation Technologies, LLC
- Piston and method of making a piston28 Feb 2019US 2019/0061074 A1Tenneco Inc.
Most cited
By later US patents
- Method for the production of a single part piston and a piston produced by such a method10US 7,987,831 B2Mahle International GmbH · 2011
- Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom3US 10,654,029 B2Univation Technologies, LLC · 2020
- Hybrid orbiting spindle for shaping non-circular holes2US 7,568,409 B2Federal-Mogul World Wide, Inc. · 2009
- Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom1US 10,195,589 B2Univation Technologies, LLC · 2019
- Machining process for trapezoid rings with small axial dimensions, used in pistons of internal combustion engines1US 10,197,161 B2KS Kolbenschmidt GmbH · 2019