Inventor · disambiguated record
Helmut Knittel
Also filed as: KNITTEL HELMUT
9 granted patents·116 citations·filing 1979–1996
89Inventor score
Top patents by PatentIndex Score
9 records- 0178US4851049AThermostable bismuth vanadate/molybdate pigmentsBASF AG·Filed 1987·Granted Jul 25, 1989·27 cites·13 claims
- 0270US4226634AProcess for preparing pigment compositionsBASF FARBEN & FASERN·Filed 1979·Granted Oct 7, 1980·15 cites·8 claims
- 0364US5536309ABismuth vanadate pigmentsBASF LACKE & FARBEN·Filed 1994·Granted Jul 16, 1996·16 cites·15 claims
- 0462US5273577ABismuth phosphovanadate pigmentsBASF AG·Filed 1992·Granted Dec 28, 1993·17 cites·8 claims
- 0560US4451339APreparation of blue iron hexacyanoferrate-III pigments, and the pigments obtainedBASF AG·Filed 1982·Granted May 29, 1984·12 cites·8 claims
- 0651US4466867AProduction of blue iron hexacyanoferrate-III pigmentsBASF AG·Filed 1983·Granted Aug 21, 1984·7 cites·19 claims
- 0744US5753028AFerriferous bismuth vanadate pigmentsBASF AG·Filed 1996·Granted May 19, 1998·10 cites·6 claims
- 0843US4530725APreparation of thermally stable lead chromate pigmentsBASF FARBEN & FASERN·Filed 1984·Granted Jul 23, 1985·4 cites·3 claims
- 0941US4844741AThermostable rutile mixed phase pigmentsLACKE & FARBEN AKTIENGESELLSCH·Filed 1988·Granted Jul 4, 1989·8 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Helmut Knittel files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →