Willard E. Alexander

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Midland, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of polybenzoxazole and polybenzothiazol...
- Patent number 5,976,447
- Issue date Nov 2, 1999
- Toyobo Co., Ltd.
- Michael E. Mills
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Process for post-spin finishing of polybenzoxazole fibers
- Patent number 5,411,694
- Issue date May 2, 1995
- The Dow Chemical Company
- Willard E. Alexander
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Rapid heat-treatment method for polybenzaole fiber
- Patent number 5,288,445
- Issue date Feb 22, 1994
- The Dow Chemical Company
- Katsuya Tani
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Process for post-spin finishing of polybenzoxazole fibers
- Patent number 5,273,703
- Issue date Dec 28, 1993
- The Dow Chemical Company
- Willard E. Alexander
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING