C01B 33/2815
Of type a
Official title: {of type A (UNION CARBIDE trade name; corresponds to GRACE's types Z-12 or Z-12L)}
C01B33/2815 (Of type a) appears on 74 US grants and 2 published applications in this corpus.
Search patents in C01B- Granted patents
- 74
- Published applications
- 2
- Assignees
- 47
- Inventors
- 115
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 17 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing relating to industrial mass production of high-purity artificial zeolite13 Jan 2026US 12,522,507 B2
- Preparation of crystalline 4A zeolites12 Dec 1995US 5,474,753 ALaviosa Rhone-Poulenc
- Process to obtain zeolite 4A starting from bauxite28 Mar 1995US 5,401,487 AForet S.A.
- Micro-particulate aluminosilicate and process for producing the same2 Feb 1993US 5,183,650 ATokushu Kika Kogyo Kabushiki Kaisha
- Zeolite granules with zeolitic binder21 Jul 1992US 5,132,260 ACeca S.A.
Most cited
By later US patents
- Production of high capacity inorganic crystalline base exchange materials41US 4,041,135 AJ. M. Huber Corporation · 1977
- Process for the production of crystalline zeolitic molecular sieves of type A34US 4,073,867 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler · 1978
- Preparation of binderless 3A adsorbents32US 4,424,144 AW. R. Grace & Co. · 1984
- Industrial process for continuous production of zeolite A27US 4,314,979 APCUK Produits Chimiques Ugine Kuhlmann · 1982
- Process for preparing molecular sieve bodies25US 4,818,508 AUop LLC · 1989