Inventor
Helmut Knittel
Inventor
Ludwigsburg, DE
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Pprimary
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds32%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties32%
C01GCompounds containing metals not covered by subclasses c01d or c01f8%
C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals8%
C01BNon-metallic elements4%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments4%
C09DCoating compositions, e.g. paints, varnishes or lacquers4%
D21HPulp compositions4%
PatentTitleYear
5,753,028'Ferriferous bismuth vanadate pigments'19985,536,309'Bismuth vanadate pigments'19965,273,577'Bismuth phosphovanadate pigments'19934,851,049'Thermostable bismuth vanadate/molybdate pigments'19894,844,741'Thermostable rutile mixed phase pigments'19894,530,725'Preparation of thermally stable lead chromate pigments'19854,466,867'Production of blue iron hexacyanoferrate-III pigments'19844,451,339'Preparation of blue iron hexacyanoferrate-III pigments, and the pigments obtained'19844,226,634'Process for preparing pigment compositions'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1985Patents assigned to BASF FARBEN & FASERN (2)· patent assignee history
1980–1998Based in Ludwigsburg, DE· patent location history
1984–1998Patents assigned to BASF AG (5)· patent assignee history
1989Patents assigned to LACKE & FARBEN AKTIENGESELLSCH (1)· patent assignee history
1996Patents assigned to BASF LACKE & FARBEN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 5 | 1984–1998 |
| BASF FARBEN & FASERN | 2 | 1980–1985 |
| BASF LACKE & FARBEN | 1 | 1996 |
| LACKE & FARBEN AKTIENGESELLSCH | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ludwigsburg, DE | 9 | 1980–1998 |