Vasily Dmitrievich Valgin

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Vladimir, SU

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Patents Grantslast 30 patents

Information Patent Grant
Acid agent from phenolic reactants aldehydes and aryl sulphonic aci...
- Patent number 4,252,938
- Issue date Feb 24, 1981
- Vasily D. Valgin
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing acid agent from sulfonated phenol and formald...
- Patent number 4,211,856
- Issue date Jul 8, 1980
- Vasily D. Valgin
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of preparing phenolaldehyde foamed plastics
- Patent number 3,998,765
- Issue date Dec 21, 1976
- Viktor Alexeevich Novak
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...