D. V. Satyanarayana Gupta

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Liquid CO2/hydrocarbon oil emulsion fracturing system
- Patent number 6,509,300
- Issue date Jan 21, 2003
- BJ Services Company
- D. V. Satyanarayana Gupta
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Foam-fluid for fracturing subterranean formations
- Patent number 6,410,489
- Issue date Jun 25, 2002
- BJ Services Company Canada
- Kewei Zhang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...