Willem G. Haanstra

Follow

Person

Westervoort, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Process for determining the polymer concentration in a spinning dop...
- Patent number 6,672,164
- Issue date Jan 6, 2004
- Teijin Twaron B.V.
- Willem G. Haanstra
- G01 - MEASURING TESTING
Information Patent Grant
Process for determining the acidity of a washing solution for fibers
- Patent number 6,606,901
- Issue date Aug 19, 2003
- Teijin Twaron B.V.
- Willem G. Haanstra
- G01 - MEASURING TESTING