Assignee
AMERICAN PETRO MART INC
7 granted patents·115 citations·filing 1978–1986
Top patents by PatentIndex Score
7 records- 0184US4280904AHigh capacity folded moving bed ion exchange apparatus and method for treating phosphoric acidAMERICAN PETRO MART INC·Filed 1979·Granted Jul 28, 1981·25 cites·46 claims
- 0277US4228001AFolded moving bed ion exchange apparatus and methodAMERICAN PETRO MART INC·Filed 1978·Granted Oct 14, 1980·24 cites·28 claims
- 0376US4363880AMethod of selectively removing adsorbed calcium and magnesium from cation exchange resinsAMERICAN PETRO MART INC·Filed 1981·Granted Dec 14, 1982·18 cites·8 claims
- 0458US4385993AMethod and apparatus for folded moving bed ion exchange systemAMERICAN PETRO MART INC·Filed 1981·Granted May 31, 1983·18 cites·11 claims
- 0551US4721519AStable ammonium polyphosphate liquid fertilizer from merchant grade phosphoric acidAMERICAN PETRO MART INC·Filed 1986·Granted Jan 26, 1988·11 cites·13 claims
- 0651US4461710AAdjustably metered transfer of resin increments in folded bed ion exchange systemsAMERICAN PETRO MART INC·Filed 1983·Granted Jul 24, 1984·11 cites·6 claims
- 0749US4493907AMethod of using higher concentration sulfuric acid for stripping and precipitation of adsorbed magnesiumAMERICAN PETRO MART INC·Filed 1983·Granted Jan 15, 1985·8 cites·12 claims
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