D21H 23/78
Controlling or regulating not limited to any particular process or apparatus
D21H23/78 (Controlling or regulating not limited to any particular process or apparatus) appears on 86 US grants and 80 published applications in this corpus.
Search patents in D21H- Granted patents
- 86
- Published applications
- 80
- Assignees
- 60
- Inventors
- 214
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 4 |
| 2003 | 6 | 6 |
| 2004 | 3 | 4 |
| 2005 | 4 | 2 |
| 2006 | 3 | 4 |
| 2007 | 2 | 5 |
| 2008 | 0 | 4 |
| 2009 | 1 | 6 |
| 2010 | 3 | 0 |
| 2011 | 5 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 2 | 7 |
| 2017 | 1 | 1 |
| 2018 | 3 | 0 |
| 2019 | 2 | 4 |
| 2020 | 3 | 5 |
| 2021 | 2 | 3 |
| 2022 | 1 | 1 |
| 2023 | 4 | 3 |
| 2024 | 2 | 5 |
| 2025 | 2 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for quantifying a degree of fibrillation of fibers within pulp using image processing22 Sep 2026US 12,742,292 B2Domtar Paper Company, LLC
- Method for controlling decomposition of corrosion-resistant paper10 Feb 2026US 12,546,063 B2Nippon Beet Sugar Manufacturing Co., Ltd.
- Pulp quality monitoring28 Oct 2025US 12,454,796 B2Kemira Oyj
- System and method of dynamic corrective enzyme selection and formulation for pulp and paper production29 Apr 2025US 12,286,754 B2Buckman Laboratories International, Inc.
- System and method of dynamic corrective enzyme selection and formulation for pulp and paper production9 Jul 2024US 12,031,273 B2Buckman Laboratories International, Inc.
- Process Modelling Method and System for Non-Linear Continuous-Like Process and Application in Pulp and Paper Industry5 Mar 2026US 2026/0062867 A1Aspen Tech Corporation
- Composition and method for controlling volatile fatty acid content in pulp, paper, and/or board making processes29 Jan 2026US 2026/0028778 A1Solenis Technologies, L.P.
- Internal Spraying of Paper Product Cores20 Nov 2025US 2025/0354336 A1Kimberly-Clark Worldwide, Inc.
- Spacing-aware plant detection model for agriculture task control23 Oct 2025US 2025/0327248 A1FarmWise Labs, Inc.
- System and method of real-time enzymatic activity detection and dynamic formulation for pulp and paper production24 Jul 2025US 2025/0237014 A1
Most cited
By later US patents
- Control system using process model108US 6,772,036 B2Fisher-Rosemount Systems, Inc. · 2004
- Method and apparatus for controlling an extended process77US 5,715,158 AABB Industrial Systems, Inc. · 1998
- Method of monitoring surface associated microbiological activity in process streams40US 7,949,432 B2Nalco Company · 2011
- Multi-measurement/sensor coating consolidation detection method and system38US 6,805,899 B2Honeywell International Inc. · 2004
- Coating device35US 4,869,933 AJ. M. Voith GmbH · 1989