Douglas J. Croteau

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Springfield, VT, US

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Patents Grantslast 30 patents

Information Patent Grant
Natural stone sealer compositions
- Patent number 11,739,234
- Issue date Aug 29, 2023
- Questech Corporation
- Barry Culkin
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Natural stone sealer compositions
- Patent number 10,532,956
- Issue date Jan 14, 2020
- Questech Corporation
- Barry Culkin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Switch plate assembly
- Patent number D732375
- Issue date Jun 23, 2015
- Questech Corporation
- Roger Questel
- D08 - Tools and hardware
Information Patent Grant
Switch plate assembly
- Patent number D688935
- Issue date Sep 3, 2013
- Questech Corporation
- Roger Questel
- D08 - Tools and hardware

Patents Applicationslast 30 patents

Information Patent Application
NATURAL STONE SEALER COMPOSITIONS
- Publication number 20210253890
- Publication date Aug 19, 2021
- Questech Corporation
- Barry Culkin
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
NATURAL STONE SEALER COMPOSITIONS
- Publication number 20190047916
- Publication date Feb 14, 2019
- Questech Corporation
- Barry Culkin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES