C04B 35/63444
Nitrogen-containing polymers
Official title: {Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]}
C04B35/63444 (Nitrogen-containing polymers) appears on 177 US grants and 210 published applications in this corpus.
Search patents in C04B- Granted patents
- 177
- Published applications
- 210
- Assignees
- 199
- Inventors
- 811
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 4 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 3 | 2 |
| 2007 | 2 | 4 |
| 2008 | 0 | 5 |
| 2009 | 3 | 6 |
| 2010 | 2 | 5 |
| 2011 | 1 | 8 |
| 2012 | 1 | 16 |
| 2013 | 6 | 12 |
| 2014 | 3 | 2 |
| 2015 | 7 | 6 |
| 2016 | 5 | 4 |
| 2017 | 3 | 16 |
| 2018 | 6 | 11 |
| 2019 | 9 | 10 |
| 2020 | 9 | 18 |
| 2021 | 13 | 17 |
| 2022 | 4 | 15 |
| 2023 | 10 | 14 |
| 2024 | 12 | 15 |
| 2025 | 8 | 7 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High-entropy carbide ceramic and rare earth-containing high-entropy carbide ceramic, fibers and precursors thereof, and methods for preparing the same11 Aug 2026US 12,703,667 B2Institute of Chemistry, Chinese Academy of Sciences
- Method for manufacturing conductive particles for conducting ions and electrons of positive or negative electrode28 Jul 2026US 12,692,197 B1Shenzhen TXD Technology Co., Ltd.
- Process for producing moulded articles from carbon or graphite by 3D printing21 Apr 2026US 12,606,490 B2Nippon Kornmeyer Carbon Group GmbH
- Method for producing carbonized or graphitized molding parts24 Mar 2026US 12,583,796 B2Nippon Kornmeyer Carbon Group GmbH
- Binder solutions comprising a fugitive metal precursor for use in additive manufacturing17 Feb 2026US 12,551,947 B2General Electric Company
- Method for Producing High Strength Ceramic Particles, and Method for Producing Micro-Porous Spherical Particles for Aerosol Generator using Benard Cell Phenomenon13 Aug 2026US 2026/0234062 A1EM-TECH Co., Ltd.
- Barrier Compositions, Articles Comprising Barrier Compositions, and Associated Methods9 Jul 2026US 2026/0196531 A1Aerospace Carbon Solutions LLC
- Composite powder containing yttria and method for manufacturing same11 Jun 2026US 2026/0159449 A1Komico Ltd.
- High zirconia brick, and preparation process and use thereof14 May 2026US 2026/0132087 A1Zhengzhou Fangming High-Temperature Ceramic New Material Co., Ltd.
- Ceramic composite material and capillary7 May 2026US 2026/0125328 A1Industrial Technology Research Institute
Most cited
By later US patents
- Process for the preparation of nanostructured materials191US 7,056,455 B2Carnegie Mellon University · 2006
- Ceramic process and products168US 4,693,986 AOrthoMatrix, Inc. · 1987
- Binder compositions for laser sintering processes94US 6,048,954 AUniversity of Texas System Board of Regents · 2000
- Binder for obtaining a ceramic molded green body65US 4,492,783 AKuraray Co., Ltd. · 1985
- Method for molding ceramic powders using a water-based gel casting56US 5,028,362 AMartin Marietta Energy Systems, Inc. · 1991