B29K 2001/12
Cellulose acetate
Official title: {Cellulose acetate}
B29K2001/12 (Cellulose acetate) appears on 215 US grants and 360 published applications in this corpus.
Search patents in B29K- Granted patents
- 215
- Published applications
- 360
- Assignees
- 119
- Inventors
- 569
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 17 |
| 2004 | 5 | 12 |
| 2005 | 3 | 14 |
| 2006 | 7 | 19 |
| 2007 | 5 | 23 |
| 2008 | 7 | 34 |
| 2009 | 5 | 66 |
| 2010 | 16 | 33 |
| 2011 | 20 | 18 |
| 2012 | 20 | 7 |
| 2013 | 12 | 8 |
| 2014 | 9 | 5 |
| 2015 | 6 | 13 |
| 2016 | 2 | 6 |
| 2017 | 4 | 12 |
| 2018 | 7 | 7 |
| 2019 | 6 | 14 |
| 2020 | 9 | 6 |
| 2021 | 7 | 3 |
| 2022 | 5 | 14 |
| 2023 | 5 | 4 |
| 2024 | 3 | 12 |
| 2025 | 6 | 2 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biodegradable resin composition and molded product12 May 2026US 12,624,193 B2Tbm Co., Ltd.
- Foamable cellulose acetate compositions, foams and foam articles formed therefrom21 Apr 2026US 12,606,694 B2Eastman Chemical Company
- Co-reactive additive manufacturing compositions and articles for use in investment casting3 Mar 2026US 12,564,876 B2PPG Industries Ohio, Inc.
- Freeform polymer precipitation (FPP) in microparticulate gels4 Nov 2025US 12,459,194 B2Singapore University of Technology and Design
- Process and system for blending a plasticizer with a polysaccharide ester polymer19 Aug 2025US 12,390,971 B2Celanese International Corporation
- Forming mandrel and liquid recovery methods for use in sheet production process3 Sep 2026US 2026/0257409 A1Eastman Chemical Company
- Method and manufacturing system for producing molded product20 Aug 2026US 2026/0241626 A1Seiko Epson Corporation
- Cellulose-based resin composition and molded body using the same13 Aug 2026US 2026/0234374 A1NEC Corporation
- Cellulose ester foamed articles6 Aug 2026US 2026/0225759 A1Eastman Chemical Company
- Methods of thermoforming cellulose ester foamed articles6 Aug 2026US 2026/0226245 A1Eastman Chemical Company
Most cited
By later US patents
- High efficiency retroreflective material175US 4,895,428 AMinnesota Mining and Manufacturing Company · 1990
- Retroreflective material with improved angularity172US 5,138,488 AMinnesota Mining and Manufacturing Company · 1992
- Advanced engineering resin and wood fiber composite90US 5,948,524 AAndersen Corporation · 1999
- Vacuum filter device69US 5,603,900 AMillipore Investment Holdings Limited · 1997
- Method of aperturing thin sheet materials66US 5,879,494 AMinnesota Mining and Manufacturing Company · 1999