C09K 2019/3419
Four-membered ring with oxygen
Official title: {Four-membered ring with oxygen(s), e.g. oxetane, in fused, bridged or spiro ring systems}
C09K2019/3419 (Four-membered ring with oxygen) appears on 3 US grants and 3 published applications in this corpus.
Search patents in C09K- Granted patents
- 3
- Published applications
- 3
- Assignees
- 3
- Inventors
- 13
- Latest grant
- 28 Sep 2021
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| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
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Recent patents
- Liquid crystal alignment agent, liquid crystal alignment film, liquid crystal element, and polymer28 Sep 2021US 11,130,913 B2Jsr Corporation
- Polymerisable LC medium and polymer film with negative optical dispersion8 Oct 2019US 10,435,628 B2Merck Patent GmbH
- Spiro[3.3] heptyl-dioxan derivatives and their use in liquid crystal media6 Apr 2010US 7,691,456 B2Merck Patent Gesellschaft
- Liquid crystal alignment agent, liquid crystal alignment film, liquid crystal element, and polymer1 Jul 2021US 2021/0198577 A1Jsr Corporation
- Polymerisable lc medium and polymer film with negative optical dispersion10 Aug 2017US 2017/0226421 A1Merck Patent GmbH
- Spiro[3.3] Heptyl-Dioxan Derivatives and Their Use in Liquid Crystal Media16 Oct 2008US 2008/0251761 A1Merck Patent Gesellschaft
Most cited
By later US patents