C09B 1/18
Preparation by synthesis of the nucleus
C09B1/18 (Preparation by synthesis of the nucleus) appears on 4 US grants and 0 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 0
- Assignees
- 3
- Inventors
- 10
- Latest grant
- 7 Feb 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Preparation of anthraquinones7 Feb 1995US 5,387,704 ABASF SE
- Synthesis of 1-aminoanthraquinone21 Jul 1992US 5,132,437 AHoechst Celanese Corporation
- Synthesis of 1-aminoanthraquinone14 Jul 1992US 5,130,448 AHoechst Celanese Corporation
- Process for production of 1-aminoanthraquinone20 Jun 1989US 4,840,749 ANippon Shokubai Kagaku Kogyo Co., Ltd.
No published applications in this class yet.
Most cited
By later US patents