from ammonium sulfate containing sulfuric acid solutions

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Patents Grantslast 30 patents

Information Patent Grant
Method for regenerating a residual substance that contains sulfur a...
- Patent number 7,521,035
- Issue date Apr 21, 2009
- Messer Griesheim GmbH
- Gerhard Grob
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for recovering sulfuric acid from sulfate salts
- Patent number 6,146,612
- Issue date Nov 14, 2000
- Degussa-Huls AG
- Hans Albrecht Hasseberg
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Regeneration of sulfuric acid from sulfate by-products of 2-hydoxy-...
- Patent number 5,670,128
- Issue date Sep 23, 1997
- Novus International, Inc.
- Robert W. Grendel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Regeneration of sulfuric acid from sulfate by-products of 2-hydroxy...
- Patent number 5,498,790
- Issue date Mar 12, 1996
- Novus International, Inc.
- Robert W. Grendel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3549320
- Patent number 3,549,320
- Issue date Dec 22, 1970
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3419601
- Patent number 3,419,601
- Issue date Dec 31, 1968
- C07 - ORGANIC CHEMISTRY