D21H 17/61
Bitumen
D21H17/61 (Bitumen) appears on 25 US grants and 27 published applications in this corpus.
Search patents in D21H- Granted patents
- 25
- Published applications
- 27
- Assignees
- 10
- Inventors
- 25
- Latest grant
- 8 May 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 1 | 5 |
| 2013 | 7 | 7 |
| 2014 | 3 | 3 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for producing a mat of cellulose fibres with a controlled level of mineral material for bitumen-impregnated roofing elements, and suitable device8 May 2018US 9,963,830 B2Onduline
- Wet-end manufacturing process for bitumen-impregnated fiberboard7 Oct 2014US 8,852,401 B2W. R. Meadows, Inc.
- Wet-end manufacturing process for bitumen-impregnated fiberboard21 Jan 2014US 8,632,660 B2W. R. Meadows, Inc.
- Wet-end manufacturing process for bitumen-impregnated fiberboard21 Jan 2014US 8,632,661 B2W. R. Meadows, Inc.
- Wet-end manufacturing process for bitumen-impregnated fiberboard22 Oct 2013US 8,562,788 B2W. R. Meadows, Inc.
- Paper substrates and articles containing antimicrobial components as well as methods of making and using the same9 Sep 2021US 2021/0277605 A1International Paper Company
- Paper substrates and articles containing antimicrobial components as well as methods of making and using the same11 Jul 2019US 2019/0211507 A1International Paper Company
- Paper substrates and containing an antimicrobial component as well as method of making and using the same7 Dec 2017US 2017/0350075 A1International Paper Company
- Method for producing a mat of cellulose fibres with a controlled level of mineral material for bitumen-impregnated roofing elements, and suitable device26 Jan 2017US 2017/0022669 A1Onduline
- Paper substrates and articles containing antimicrobial components as well as methods of making and using the same29 Jan 2015US 2015/0027649 A1International Paper Company
Most cited
By later US patents
- Sheet type felt36US 4,513,045 AGAF Corporation · 1985
- Sheet type felt31US 4,543,158 AGAF Corporation · 1985
- High-strength roofing products using novel glass fiber mats26US 4,284,470 AGAF Corporation · 1981
- Perlite-based insulation board24US 5,749,954 AJohns Manville International, Inc. · 1998
- Process for making expansion joint material22US 6,068,804 AThe Celotex Corporation · 2000