D01F 9/28
From polyamides
Official title: from polyamides
D01F9/28 (From polyamides) appears on 15 US grants and 7 published applications in this corpus.
Search patents in D01F- Granted patents
- 15
- Published applications
- 7
- Assignees
- 14
- Inventors
- 41
- Latest grant
- 9 Jun 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 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 | 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 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Processes for preparing amine-functionalized cellulose nanocrystals and nitrogen doped carbon nanofibers9 Jun 2020US 10,676,846 B2Celluforce Inc.
- Method of producing a micro-channeled material at atmospheric pressure21 Aug 2018US 10,056,063 B2Airbus Operations GmbH
- Precursor fiber for carbon fibers, carbon fiber, and method for producing carbon fiber3 Oct 2017US 9,777,408 B2National Institute of Advanced Industrial Science and Technology
- Gas separation using adsorbent activated carbonized polyarylamides14 Feb 1995US 5,389,350 AThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
- Stabilized and carbonaceous expanded fibers24 Jan 1995US 5,384,193 AThe Dow Chemical Company
- Carbon-Fiber Precursor Fiber, Carbon Fiber, and Method for Producing Carbon Fiber3 Dec 2020US 2020/0378036 A1Natl Institute of Advanced Indus. Science & Tech.
- Processes for preparing amine-functionalized cellulose nanocrystals and nitrogen doped carbon nanofibers2 Aug 2018US 2018/0216256 A1
- Method of producing a micro-channeled material at atmospheric pressure28 Dec 2017US 2017/0372687 A1Airbus Operations GmbH
- Carbon fiber, method of preparation of same and carbon-fiber-reinforced resin composition7 Dec 2017US 2017/0350040 A1
- Carbon-Fiber Precursor Fiber, Carbon Fiber, and Method for Producing Carbon Fiber16 Nov 2017US 2017/0327973 A1National Institute of Advanced Industrial Science and Technology
Most cited
By later US patents
- Method of sealing open ends of ceramic honeycomb structural body54US 4,559,193 ANGK Insulators, Ltd. · 1985
- Method for adsorbing harmful substance34US 4,046,525 AToyobo Co., Ltd. · 1977
- Carbonaceous material and a cell using the same26US 5,348,818 ARicoh Company, Ltd. · 1994
- Internal chemical modification of carbon fibers to yield a product of reduced electrical conductivity16US 4,073,869 ACelanese Corporation · 1978
- Filaments with evolved structure and process of making some15US 4,198,459 A1980