Inventor · disambiguated record
Zahid Amjad
Also filed as: AMJAD ZAHID
29 granted patents·2 pending applications·1,441 citations·filing 1983–2009
98Inventor score
Top patents by PatentIndex Score
31 records- 0197US4842847ADental calculus inhibiting compositionsGOODRICH CO B F·Filed 1987·Granted Jun 27, 1989·250 cites·17 claims
- 0294US5288814AEasy to disperse polycarboxylic acid thickenersGOODRICH CO B F·Filed 1992·Granted Feb 22, 1994·105 cites·22 claims
- 0394US4566973AScale inhibition in water systemsGOODRICH CO B F·Filed 1984·Granted Jan 28, 1986·101 cites·15 claims
- 0493US5373044APolycarboxylic acid thickeners, emulsifiers, and suspending aids having improved wettability characteristicsGOODRICH CO B F·Filed 1994·Granted Dec 13, 1994·96 cites·27 claims
- 0592US6361768B1Hydrophilic ampholytic polymerPMD HOLDINGS CORP·Filed 1998·Granted Mar 26, 2002·205 cites·54 claims
- 0691US6297337B1Bioadhesive polymer compositionsPMD HOLDINGS CORP·Filed 1999·Granted Oct 2, 2001·88 cites·43 claims
- 0791US5349030AEasy to disperse polycarboxylic acid thickenersGOODRICH CO B F·Filed 1993·Granted Sep 20, 1994·59 cites·19 claims
- 0883US4806259AMembrane cleaning compositions containing phosphorous compoundsGOODRICH CO B F·Filed 1987·Granted Feb 21, 1989·49 cites·19 claims
- 0982US4952327AScale control with terpolymers containing styrene sulfonic acidGOODRICH CO B F·Filed 1988·Granted Aug 28, 1990·48 cites·10 claims
- 1081US4510059ACarboxylic functional polyampholytes as silica polymerization retardants and dispersantsCALGON CORP·Filed 1984·Granted Apr 9, 1985·30 cites·2 claims
- 1180US4563284AInhibition of salt precipitation in aqueous systemsGOODRICH CO B F·Filed 1984·Granted Jan 7, 1986·39 cites·8 claims
- 1278US5468797APolycarboxylic acid thickeners, emulsifiers, and suspending aids having improved wettability characteristicsGOODRICH CO B F·Filed 1994·Granted Nov 21, 1995·23 cites·3 claims
- 1376US4784774ACompositions containing phosphonoalkane carboxylic acid for scale inhibitionGOODRICH CO B F·Filed 1987·Granted Nov 15, 1988·40 cites·16 claims
- 1475US4499002AScale inhibiting copolymerGOODRICH CO B F·Filed 1983·Granted Feb 12, 1985·31 cites·6 claims
- 1573US4892725ATartar inhibition on teethGOODRICH CO B F·Filed 1988·Granted Jan 9, 1990·41 cites·19 claims
- 1669US4895658AMembrane cleaning compositions containing acrylic polymerGOODRICH CO B F·Filed 1987·Granted Jan 23, 1990·28 cites·11 claims
- 1766US5658465AMethod for inhibiting the deposition of silica and silicate compounds in water systemsGOODRICH CO B F·Filed 1995·Granted Aug 19, 1997·30 cites·30 claims
- 1866US5023001ACalcium phosphonate scale inhibitionGOODRICH CO B F·Filed 1989·Granted Jun 11, 1991·27 cites·1 claims
- 1964US4892724ATartar inhibiting oral compositions and methodGOODRICH CO B F·Filed 1988·Granted Jan 9, 1990·29 cites·19 claims
- 2062US4532048AMethod for inhibiting scale depositionGOODRICH CO B F·Filed 1983·Granted Jul 30, 1985·20 cites·18 claims
- 2154US4652377AInhibition of alkaline earth sulfate scalesGOODRICH CO B F·Filed 1985·Granted Mar 24, 1987·18 cites·10 claims
- 2254US2011114564A1Preventing Silica And Silicate Scale With Inhibitors In Industrial Water SystemsLUBRIZOL ADVANCED MAT INC·Filed 2009·Application pending·0 cites
- 2353US4915937ADental antihydrolysis agentGOODRICH CO B F·Filed 1988·Granted Apr 10, 1990·17 cites·19 claims
- 2451US2003228272A1Novel antidandruff conditioning shampooFiled 2003·Application pending·0 cites
- 2546US4952326ADispersion of particulates in an aqueous mediumGOODRICH CO B F·Filed 1988·Granted Aug 28, 1990·13 cites·9 claims
- 2645US4566974AMethod of inhibiting scale with copolymerGOODRICH CO B F·Filed 1984·Granted Jan 28, 1986·10 cites·7 claims
- 2742US4889637AScale control with terpolymers containing vinyl alcoholAMJAD ZAHID·Filed 1988·Granted Dec 26, 1989·13 cites·7 claims
- 2841US4707271AStabilization of iron in aqueous systemsGOODRICH CO B F·Filed 1985·Granted Nov 17, 1987·10 cites·12 claims
- 2939US4960522ACopolymers of an acrylic acid and alkoxyalkyl acrylate as scale inhibitorsGOODRICH CO B F·Filed 1989·Granted Oct 2, 1990·8 cites·4 claims
- 3039US4885097AStabilization of metal ions with terpolymers containing styrene sulfonic acidGOODRICH CO B F·Filed 1988·Granted Dec 5, 1989·8 cites·22 claims
- 3134US4639490AProcess for preparing novel copolymerGOODRICH CO B F·Filed 1986·Granted Jan 27, 1987·5 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Zahid Amjad files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →