Inventor

WELKENER ULRICH

DE4 patents

⚠️ This page may combine multiple inventors who share the name “WELKENER ULRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GRACE W R & CO

3 patents

US5234547AAug 10, 1993

Creping aid

GRACE W R & CO58 citations94

US5300194AApr 5, 1994

Pitch control

GRACE W R & CO40 citations89

US5266078ANov 30, 1993

Enhancement of fluorescent whitening agents: water-soluble phosphonates and carboxylates for coating paper

GRACE W R & CO10 citations66

FAIX OSKAR

1 patent

US4743339AMay 10, 1988

Method for controlling the digestion of pulp by IR spectroscopy

FAIX OSKAR30 citations83