C09B 9/00
Esters or ester-salts of leuco compounds of vat dyestuffs
C09B9/00 (Esters or ester-salts of leuco compounds of vat dyestuffs) appears on 23 US grants and 30 published applications in this corpus.
Search patents in C09B- Granted patents
- 23
- Published applications
- 30
- Assignees
- 19
- Inventors
- 52
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 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 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 8 |
| 2019 | 3 | 2 |
| 2020 | 3 | 7 |
| 2021 | 0 | 3 |
| 2022 | 4 | 0 |
| 2023 | 1 | 2 |
| 2024 | 3 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and composition for coloring a keratinous substrate using solubilized vat dyes24 Jun 2025US 12,337,053 B2Wella Germany GmbH
- Thermochromic temperature sensor3 Sep 2024US 12,078,550 B2Chromatic Technologies, Inc.
- Leuco colorants as bluing agents in laundry care compositions30 Jul 2024US 12,049,608 B2The Procter & Gamble Company
- Temperature detecting material, temperature detecting ink using same, temperature indicator, and product control system19 Mar 2024US 11,933,677 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Method of preparing electric and temperature dual-control bi-stable color-changing dyes and microcapsules23 May 2023US 11,655,373 B2Jiangnan University
- Thermochromic Temperature Sensor26 Dec 2024US 2024/0426677 A1Chromatic Technologies, Inc.
- Composition for wet indicator and wet indicator7 Nov 2024US 2024/0366827 A1
- Method and composition for coloring a keratinous substrate using solubilized vat dyes12 Oct 2023US 2023/0320964 A1Wella Germany GmbH
- Microcapsule having core-shell structure, and production method for same15 Jun 2023US 2023/0183563 A1Insilico Co. Ltd.
- Method of Preparing Electric and Temperature Dual-control Bi-stable Color-changing Dyes and Microcapsules25 Nov 2021US 2021/0363355 A1Jiangnan University
Most cited
By later US patents
- System and method for autogenerating simulations for process control system checkout and operator training13US 9,904,746 B2Schneider Electric Software, LLC · 2018
- System and method for autogenerating simulations for process control system checkout and operator training9US 8,332,193 B2Invensys Systems, Inc. · 2012
- System and method for autogenerating simulations for process control system checkout and operator training7US 8,977,527 B2Invensys Systems, Inc. · 2015
- Leuco polymers as bluing agents in laundry care compositions6US 10,479,961 B2The Procter & Gamble Company · 2019
- Camouflage pattern with extended infrared reflectance separation6US 8,932,965 B1International Textile Group, Inc. · 2015