Yoshio Otsuki

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Fukuoka-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for removing stains from structural surfaces
- Patent number 6,325,862
- Issue date Dec 4, 2001
- Kabushiki Kaisha Hanogumi
- Yoshio Otsuki
- B08 - CLEANING
Information Patent Grant
Method of removing stains from structural surface
- Patent number 6,171,406
- Issue date Jan 9, 2001
- Kabushiki Kaisha Hanogumi
- Yoshio Otsuki
- B08 - CLEANING