C12M 23/18
Open ponds
Official title: {Open ponds; Greenhouse type or underground installations}
C12M23/18 (Open ponds) appears on 155 US grants and 239 published applications in this corpus.
Search patents in C12M- Granted patents
- 155
- Published applications
- 239
- Assignees
- 142
- Inventors
- 440
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 3 |
| 2005 | 1 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 2 |
| 2008 | 2 | 12 |
| 2009 | 1 | 9 |
| 2010 | 7 | 21 |
| 2011 | 9 | 42 |
| 2012 | 15 | 17 |
| 2013 | 10 | 10 |
| 2014 | 7 | 15 |
| 2015 | 8 | 14 |
| 2016 | 8 | 7 |
| 2017 | 7 | 16 |
| 2018 | 7 | 5 |
| 2019 | 4 | 8 |
| 2020 | 8 | 9 |
| 2021 | 6 | 16 |
| 2022 | 3 | 6 |
| 2023 | 8 | 3 |
| 2024 | 6 | 5 |
| 2025 | 4 | 7 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for membrane carbonation9 Jun 2026US 12,649,898 B2Arizona Board of Regents on behalf of Arizona State University
- Method and device for adherent culture of microalgae in thin liquid layer by mobile mechanical stirring10 Feb 2026US 12,545,869 B2
- Systems and methods for algae cultivation using direct air capture30 Sep 2025US 12,426,556 B2Global Algae Technology, LLC
- Systems and methods for bleaching microbial cells22 Apr 2025US 12,281,300 B2GW Nutrition Inc.
- Lagoon cover4 Feb 2025US 12,215,306 B2Bennamann Services Ltd
- Fluid reservoir10 Sep 2026US 2026/0265099 A1
- Processes and systems for culturing algae30 Jul 2026US 2026/0218113 A1Neste Oyj
- Methods and systems for harvesting a biomass containing algal cells30 Jul 2026US 2026/0218114 A1Neste Oyj
- Method and system for membrane carbonation9 Jul 2026US 2026/0193584 A1Arizona Board of Regents on behalf of Arizona State University
- Method and system for mitigating greenhouse gas emissions by promoting the growth of methane-oxidizing bacteria5 Mar 2026US 2026/0062657 A1
Most cited
By later US patents
- Method and apparatus for extracting carbon dioxide from air125US 7,708,806 B2Global Research Technologies, LLC · 2010
- Method of growing and harvesting microorganisms106US 4,958,460 AAlgae Farms · 1990
- Method and apparatus for enhancing methane production87US 5,695,641 A1997
- Integrated microalgae production and electricity cogeneration60US 5,659,977 ACyanotech Corporation · 1997
- Biochemically reacting substrates in subterranean cavities53US 4,845,034 AHouston Industries Incorporated · 1989