C01B 39/32
Type l
Official title: Type L
C01B39/32 (Type l) appears on 46 US grants and 25 published applications in this corpus.
Search patents in C01B- Granted patents
- 46
- Published applications
- 25
- Assignees
- 27
- Inventors
- 72
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 3 |
| 2017 | 2 | 2 |
| 2018 | 0 | 4 |
| 2019 | 3 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intramolecular pi-stacking structure directing agents and molecular sieves synthesized therefrom11 Nov 2025US 12,466,738 B2ExxonMobil Technology and Engineering Company
- Lithium ion-exchanged zeolite particles including lithium phosphate within cage, electrochemical cell, and method of making the same19 Mar 2024US 11,936,066 B2GM Global Technology Operations LLC
- Method for preparing a zeolite L material hosting at least one type of guest molecule8 Mar 2022US 11,268,018 B2Merz+Benteli AG
- Zeolite with tuned aluminum content and mesoporosity29 Jun 2021US 11,046,586 B2W. R. Grace & Co.-Conn.
- Method for the preparation of synthetic crystalline zeolite materials with enhanced pore volume12 May 2020US 10,647,585 B2Centre National De La Recherche Scientifique
- Intramolecular pi-stacking structure directing agents and molecular sieves synthesized therefrom5 Feb 2026US 2026/0035255 A1ExxonMobil Technology and Engineering Company
- Transient operation method for separation device13 Nov 2025US 2025/0345750 A1NGK Insulators, Ltd.
- Method for preparing a zeolite material with a high kl zeolite content and a high mechanical strength24 Oct 2024US 2024/0351895 A1Ifp Energies Nouvelles
- Mesoporous zeolites prepared by alkaline treatment with precipitates16 Feb 2023US 2023/0051097 A1
- Lithium ion-exchanged zeolite particles for electrochemical cells and methods of making the same26 Jan 2023US 2023/0024073 A1GM Global Technology Operations LLC
Most cited
By later US patents
- Zeolite L with cylindrical morphology47US 4,544,539 AExxon Research & Engineering Co. · 1985
- Zeolite L25US 5,491,119 AExxon Chemical Patents Inc. · 1996
- Process for preparation of L type zeolites23US 4,530,824 AToyo Soda Manufacturing Co., Ltd. · 1985
- Process for preparing crystalline zeolite composition ERC-218US 4,552,731 AExxon Research & Engineering Co. · 1985
- Zeolite L catalyst18US 5,919,722 AExxon Chemical Patents Inc. · 1999