Denis C. Richards

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Mississauga, CA

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Patents Grantslast 30 patents

Information Patent Grant
Composite load bearing structure
- Patent number 5,722,589
- Issue date Mar 3, 1998
- Green Track Inc.
- Denis C. Richards
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Composite railway tie and method of manufacture thereof
- Patent number 5,609,295
- Issue date Mar 11, 1997
- Green Track Inc.
- Denis C. Richards
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Multi-layer composite block & process for manufacturing
- Patent number 5,367,007
- Issue date Nov 22, 1994
- Enviropaver Inc.
- Denis C. Richards
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Composite block & process for manufacturing
- Patent number 5,221,702
- Issue date Jun 22, 1993
- Enviropaver Inc.
- Denis C. Richards
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL