Inventor · disambiguated record
Maria S. Friedrich
Also filed as: FRIEDRICH MARIA S · FRIEDRICH MARIA STRADA
23 granted patents·1 pending application·541 citations·filing 1981–2005
96Inventor score
Top patents by PatentIndex Score
24 records- 0197US4424141AProcess for producing an oxide complex catalyst containing molybdenum and one of bismuth and telluriumSTANDARD OIL CO OHIO·Filed 1981·Granted Jan 3, 1984·71 cites·10 claims
- 0292US5093299ACatalyst for process for the manufacture of acrylonitrile and methacrylonitrileSTANDARD OIL CO OHIO·Filed 1990·Granted Mar 3, 1992·81 cites·4 claims
- 0389US5212137ACatalyst for the manufacture of acrylonitrile and methacrylonitrileSTANDARD OIL CO·Filed 1991·Granted May 18, 1993·63 cites·4 claims
- 0488US5288473AProcess for elimination of waste material during manufacture of acrylonitrileSTANDARD OIL CO OHIO·Filed 1992·Granted Feb 22, 1994·38 cites·21 claims
- 0587US4760159AMethod for ammoxidation of paraffins and catalyst thereforSTANDARD OIL CO OHIO·Filed 1987·Granted Jul 26, 1988·25 cites·7 claims
- 0685US6458742B1Catalyst for the manufacture of acrylonitrileSTANDARD OIL CO·Filed 2000·Granted Oct 1, 2002·21 cites·4 claims
- 0782US6965046B2Catalyst for the manufacture of acrylonitrileSTANDARD OIL CO·Filed 2002·Granted Nov 15, 2005·10 cites·8 claims
- 0875US5840648ACatalyst for the manufacture of acrylonitrile and hydrogen cyanideSTANDARD OIL CO OHIO·Filed 1997·Granted Nov 24, 1998·31 cites·18 claims
- 0975US5258543AMethod for ammoxidation of olefinsSTANDARD OIL CO OHIO·Filed 1992·Granted Nov 2, 1993·34 cites·11 claims
- 1069US5457223AProcess for elimination of waste material during manufacture of acrylonitrileSTANDARD OIL CO OHIO·Filed 1993·Granted Oct 10, 1995·12 cites·31 claims
- 1167US5770757AAmmoxidation catalysts containing germanium to produce high yields of acrylonitrileSTANDARD OIL CO OHIO·Filed 1996·Granted Jun 23, 1998·10 cites·8 claims
- 1266US5175334AProcess for the manufacture of acrylonitrile and methacrylonitrileSTANDARD OIL CO OHIO·Filed 1991·Granted Dec 29, 1992·24 cites·13 claims
- 1364US5066809APreparation of 3-methylpyridine from 2-methylglutaronitrileSTANDARD OIL CO OHIO·Filed 1990·Granted Nov 19, 1991·10 cites·7 claims
- 1463US5204079AHCN by catalytic ammoxidation of crude acetonitrileSTANDARD OIL CO·Filed 1991·Granted Apr 20, 1993·14 cites·17 claims
- 1561US4414134AImpregnating catalystsSTANDARD OIL CO OHIO·Filed 1981·Granted Nov 8, 1983·15 cites·8 claims
- 1660US6268529B1Method for the manufacture of acrylic acidSTANDARD OIL CO·Filed 1998·Granted Jul 31, 2001·7 cites·7 claims
- 1759US5821192AMethod of improving the attrition resistance of V/SB oxide based catalystSTANDARD OIL CO OHIO·Filed 1996·Granted Oct 13, 1998·22 cites·5 claims
- 1858US5688739AAmmoxidation catalysts containing germanium to produce high yields of acrylonitrileSTANDARD OIL CO OHIO·Filed 1996·Granted Nov 18, 1997·19 cites·12 claims
- 1955US5877108APerformance of used molybdenum based catalysts by the addition of ammonium dimolybdateSTANDARD OIL CO OHIO·Filed 1997·Granted Mar 2, 1999·16 cites·3 claims
- 2042US4659689AMethod of preparation of high active phase (AMM)oxidation catalysts with improved performance and attrition resistanceSTANDARD OIL CO OHIO·Filed 1986·Granted Apr 21, 1987·7 cites·8 claims
- 2141US4978764AMethod for ammoxidation of paraffinsSTANDARD OIL CO OHIO·Filed 1989·Granted Dec 18, 1990·6 cites·19 claims
- 2241US2006199730A1Composition and method for improving density and hardness of fluid bed catalystsSEELY MICHAEL J·Filed 2005·Application pending·0 cites
- 2336US6451730B1Two-stage preparation of promoted V/Sb-oxide ammoxidation catalystsSTANDARD OIL CO·Filed 1997·Granted Sep 17, 2002·4 cites·13 claims
- 2421US5171876AMethod for ammoxidation of paraffinsSTANDARD OIL CO OHIO·Filed 1991·Granted Dec 15, 1992·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →