D21H 17/01
Waste products
Official title: Waste products, e.g. sludge
D21H17/01 (Waste products) appears on 30 US grants and 33 published applications in this corpus.
Search patents in D21H- Granted patents
- 30
- Published applications
- 33
- Assignees
- 32
- Inventors
- 96
- Latest grant
- 23 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 4 |
| 2003 | 1 | 4 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 2 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for managing solids in papermaking whitewater23 Jul 2024US 12,043,961 B2
- Edible multi-ring can-holder and methods for manufacturing edible can-holders17 Oct 2023US 11,788,235 B2E6Pr S.A P.I. De C.V.
- Method of producing a fibrous web10 Aug 2021US 11,085,151 B2Paptic Oy
- Bio buckypaper synthesized with fish scales23 Jun 2020US 10,689,257 B1King Saud University
- Fiberboards, uses and methods of preparation thereof24 Apr 2018US 9,951,474 B2Exp Services Inc.
- Process of using non-wood fibers to create paper pulp16 Jul 2026US 2026/0201639 A1
- Paper product and molded article30 Jan 2025US 2025/0034804 A1Toppan Holding Inc.
- Multi-ply paper containing used paper fibers and additional fibers16 Jan 2025US 2025/0019903 A1Certina Production AG
- Process of using non-wood fibers to create paper pulp8 Aug 2024US 2024/0263393 A1
- Pulp mold comprising seaweed, and production method for same11 Jan 2024US 2024/0011224 A1Marine Innovation, Inc.
Most cited
By later US patents
- Process for obtaining fibers integral with calcium carbonate particles47US 6,387,212 B1L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2002
- Latex containing papers38US 4,510,019 APapeteries de Jeand'heurs · 1985
- Method for modifying papermaking sludge and products made from modified papermaking sludge25US 5,795,377 AKimberly-Clark Worldwide, Inc. · 1998
- Upgrading waste paper by treatment with sulfite waste liquor22US 4,191,610 A1980
- Method for forming pulp from processed recycled fibers20US 5,772,847 AStone-Consolidated (US) Corporation · 1998