C09C 1/20
Lead chromate
C09C1/20 (Lead chromate) appears on 20 US grants and 1 published applications in this corpus.
Search patents in C09C- Granted patents
- 20
- Published applications
- 1
- Assignees
- 13
- Inventors
- 51
- Latest grant
- 4 Jun 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for preparing colored pigments4 Jun 2002US 6,398,858 B1Cabot Corporation
- Stable lead chromate pigment composition and process for producing the same28 Sep 1993US 5,248,337 AToho Ganryo Kogyo Co., Ltd.
- Orthorhombic greenish-tinged lead chromate pigments1 May 1990US 4,921,541 ACiba-Geigy Corporation
- Orthorhombic lead chromate pigments of greenish hue10 Oct 1989US 4,872,915 ACiba-Geigy Corporation
- Preparation of thermally stable lead chromate pigments23 Jul 1985US 4,530,725 ABASF Farben
Most cited
By later US patents
- Process for preparing colored pigments48US 6,398,858 B1Cabot Corporation · 2002
- Process for granulating lead chromate-containing pigments21US 4,127,421 AHercules Incorporated · 1978
- Lead chromate pigments17US 4,054,465 AHercules Incorporated · 1977
- Method for encapsulating water-insoluble particles12US 4,110,492 AThe Harshaw Chemical Company · 1978
- Coated pigment composition having improved abrasion resistance and process for preparation thereof8US 3,956,005 AMizusawa Kagaku Kogyo Kabushiki Kaisha · 1976