Wolfgang H. Strehlow

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Woodbury, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Solid phase extraction using composite sheet for direct measurement...
- Patent number 5,891,559
- Issue date Apr 6, 1999
- Minnesota Mining and Manufacturing Co.
- Garold L. Goken
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Solid phase extraction using composite sheet for direct measurement...
- Patent number 5,637,506
- Issue date Jun 10, 1997
- Minnesota Mining and Manufacturing Company
- Garold L. Goken
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of forming a retroreflective material via light interference...
- Patent number 4,095,875
- Issue date Jun 20, 1978
- Minnesota Mining and Manufacturing Company
- Pui Kum Lee
- G02 - OPTICS
Information Patent Grant
Retroreflective material made by recording a plurality of light int...
- Patent number 4,036,552
- Issue date Jul 19, 1977
- Minnesota Mining and Manufacturing Company
- Pui Kum Lee
- G02 - OPTICS
Information Patent Grant
Retroreflective material including geometric fresnel zone plates
- Patent number 3,993,401
- Issue date Nov 23, 1976
- Minnesota Mining and Manufacturing Company
- Wolfgang H. Strehlow
- G02 - OPTICS