C04B 18/241
Paper
Official title: {Paper, e.g. waste paper; Paper pulp}
C04B18/241 (Paper) appears on 62 US grants and 60 published applications in this corpus.
Search patents in C04B- Granted patents
- 62
- Published applications
- 60
- Assignees
- 41
- Inventors
- 111
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 6 |
| 2003 | 1 | 12 |
| 2004 | 7 | 5 |
| 2005 | 4 | 6 |
| 2006 | 2 | 0 |
| 2007 | 6 | 0 |
| 2008 | 2 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 4 | 3 |
| 2021 | 0 | 3 |
| 2022 | 0 | 3 |
| 2023 | 2 | 3 |
| 2024 | 0 | 5 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Masonry material utilizing recycled construction and demolition waste7 Apr 2026US 12,595,208 B2Washington State University
- Method of pressure-pumping ready-mixed concrete19 Aug 2025US 12,391,614 B2Take Cite Co., Ltd.
- Fiber cement products and methods for the production thereof29 Jul 2025US 12,371,373 B2Etex Services NV
- Filler made from sorted waste materials for the production of cement-bound shaped bodies11 Mar 2025US 12,246,990 B2Terion, Inc.
- Conversion of gypsum waste into foamed construction material12 Dec 2023US 11,840,484 B2Washington State University
- Hardened body of hydraulic composition8 Oct 2026US 2026/0308056 A1Kuraray Co., Ltd.
- Fiber cement products and methods for the production thereof4 Dec 2025US 2025/0368572 A1Etex Services NV
- Method of pressure-pumping ready-mixed concrete15 Aug 2024US 2024/0270639 A1Take Cite Co., Ltd.
- Manufacturing of Ultra-Lightweight Composites Through Accelerated CO2 Mineralization15 Aug 2024US 2024/0270653 A1PVT Clean Energy LLC
- Ready mix composition and a process for its preparation2 May 2024US 2024/0140866 A1
Most cited
By later US patents
- Fiber cement composite materials using sized cellulose fibers76US 6,676,745 B2James Hardie Research Pty Limited · 2004
- Dispersion of plant pulp in concrete and use thereof67US 5,643,359 ADPD, Inc. · 1997
- Insulating and filler material comprising cellulose fibers and clay, and method of making same from paper-making waste55US 4,356,060 A1982
- Process for forming aggregate; and product55US 5,500,044 AGreengrove Corporation · 1996
- Process and apparatus for producing fiber-reinforced plaster plates55US 5,520,779 ABabcock BSH Aktiengesellschaft Vormals Buttner-Schilde-Haas AG · 1996