B29C 55/065
In several stretching steps
Official title: {in several stretching steps}
B29C55/065 (In several stretching steps) appears on 151 US grants and 133 published applications in this corpus.
Search patents in B29C- Granted patents
- 151
- Published applications
- 133
- Assignees
- 112
- Inventors
- 370
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 6 |
| 2004 | 3 | 6 |
| 2005 | 2 | 3 |
| 2006 | 6 | 7 |
| 2007 | 1 | 6 |
| 2008 | 2 | 12 |
| 2009 | 1 | 10 |
| 2010 | 4 | 3 |
| 2011 | 6 | 11 |
| 2012 | 11 | 11 |
| 2013 | 2 | 6 |
| 2014 | 9 | 10 |
| 2015 | 4 | 6 |
| 2016 | 11 | 4 |
| 2017 | 5 | 3 |
| 2018 | 6 | 4 |
| 2019 | 3 | 4 |
| 2020 | 1 | 4 |
| 2021 | 5 | 5 |
| 2022 | 2 | 3 |
| 2023 | 4 | 5 |
| 2024 | 2 | 1 |
| 2025 | 5 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Polyester film and method for producing same23 Sep 2025US 12,421,387 B2Unitika Ltd.
- Porous PTFE membrane3 Jun 2025US 12,318,722 B2Donaldson Company, Inc.
- Load wrapping apparatus and method utilizing packaging material with recycled content25 Mar 2025US 12,258,154 B2Lantech.com, LLC
- Stretching apparatus for manufacturing separator and method of manufacturing separator using the same18 Feb 2025US 12,230,831 B2W-Scope Chungju Plant Co., Ltd.
- Drawability enhancement in polymer thin films4 Feb 2025US 12,214,541 B2Meta Platforms Technologies, LLC
- Porous ptfe membrane2 Oct 2025US 2025/0303330 A1Donaldson Company, Inc.
- Testing film with impurities28 Mar 2024US 2024/0102902 A1Estl NV
- Stretching apparatus for manufacturing separator and method of manufacturing separator using the same29 Jun 2023US 2023/0207961 A1W-Scope Chungju Plant Co., Ltd.
- Drawability enhancement in polymer thin films8 Jun 2023US 2023/0173741 A1Meta Platforms Technologies, LLC
- Producing method of power storage device30 Mar 2023US 2023/0096550 A1Prime Planet Energy & Solutions, Inc.
Most cited
By later US patents
- Porpous PTFE film and a manufacturing method therefor264US 5,476,589 AW. L. Gore & Associates, Inc. · 1995
- Production of porous sintered PTFE products119US 4,110,392 AW. L. Gore & Associates, Inc. · 1978
- Continuous process for manufacture of crosslinked, oriented polyethylene extrudates106US 5,505,900 A1996
- Process of making polymer articles103US 6,743,388 B2Advanced Cardiovascular Systems, Inc. · 2004
- Trilayer battery separator83US 6,080,507 ACelgard, LLC · 2000