Umanand Sharma

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Dhanbad, Bihar, IN

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Patents Grantslast 30 patents

Information Patent Grant
Process for the upgradation of petroleum residue
- Patent number 6,540,904
- Issue date Apr 1, 2003
- Suhas Ranjan Gun
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...