Assignee
NAT PATENT DEV CORP
US·46 granted patents·2,604 citations·filing 1971–1997
Top patents by PatentIndex Score
46 records- 0197US5804329AElectroconversion cellNAT PATENT DEV CORP·Filed 1995·Granted Sep 8, 1998·218 cites·69 claims
- 0297US4617557AMedication compliance aid for unit dose packagingNAT PATENT DEV CORP·Filed 1984·Granted Oct 14, 1986·355 cites·9 claims
- 0395US4770632ADelivery system for dental treatment solutionNAT PATENT DEV CORP·Filed 1985·Granted Sep 13, 1988·173 cites·45 claims
- 0495US4208365AMethod and apparatus for molding toric contact lensesNAT PATENT DEV CORP·Filed 1978·Granted Jun 17, 1980·82 cites·35 claims
- 0594US4081402AHydrophilic absorbentsNAT PATENT DEV CORP·Filed 1975·Granted Mar 28, 1978·79 cites·17 claims
- 0693US4298002APorous hydrophilic materials, chambers therefrom, and devices comprising such chambers and biologically active tissue and methods of preparationNAT PATENT DEV CORP·Filed 1979·Granted Nov 3, 1981·190 cites·43 claims
- 0793US4211588AMethod of manufacturing a vented piercing device for intravenous administration setsNAT PATENT DEV CORP·Filed 1978·Granted Jul 8, 1980·54 cites·11 claims
- 0892US3990381AHydrophilic polymer coating for underwater structuresNAT PATENT DEV CORP·Filed 1974·Granted Nov 9, 1976·43 cites·62 claims
- 0991US4060600ATreating teethNAT PATENT DEV CORP·Filed 1972·Granted Nov 29, 1977·102 cites·10 claims
- 1090US4452925ABiologically stabilized compositions comprising collagen as the minor component with ethylenically unsaturated compounds used as contact lensesNAT PATENT DEV CORP·Filed 1981·Granted Jun 5, 1984·74 cites·29 claims
- 1190US4064086AThermoplastic hydrogelsNAT PATENT DEV CORP·Filed 1976·Granted Dec 20, 1977·48 cites·40 claims
- 1290US4038264AHema copolymers having high oxygen permeabilityNAT PATENT DEV CORP·Filed 1974·Granted Jul 26, 1977·85 cites·55 claims
- 1389US4252865AHighly solar-energy absorbing device and method of making the sameNAT PATENT DEV CORP·Filed 1978·Granted Feb 24, 1981·69 cites·34 claims
- 1488US4407766AMolds and procedure for producing truncated contact lensesNAT PATENT DEV CORP·Filed 1981·Granted Oct 4, 1983·84 cites·25 claims
- 1588US3941858AHydrophilic polymers, articles and methods of making sameNAT PATENT DEV CORP·Filed 1973·Granted Mar 2, 1976·54 cites·10 claims
- 1687US4009684AWater soluble polymers useful in the preparation of novel animal litterNAT PATENT DEV CORP·Filed 1975·Granted Mar 1, 1977·50 cites·20 claims
- 1786US4388428ABiologically stabilized compositions comprising collagen as the major component with ethylenically unsaturated compounds used as contact lensesNAT PATENT DEV CORP·Filed 1981·Granted Jun 14, 1983·61 cites·29 claims
- 1884US5948558AHigh energy density boride batteriesNAT PATENT DEV CORP·Filed 1997·Granted Sep 7, 1999·75 cites·36 claims
- 1983US4587129AHydrophilic gels containing high amounts of fragranceNAT PATENT DEV CORP·Filed 1982·Granted May 6, 1986·47 cites·6 claims
- 2083US4147764AHydrophilic absorbentsNAT PATENT DEV CORP·Filed 1977·Granted Apr 3, 1979·34 cites·11 claims
- 2182US4003991AOphthalmic formulationNAT PATENT DEV CORP·Filed 1974·Granted Jan 18, 1977·50 cites·34 claims
- 2280US4015008AN,N-dichloro substituted aminocarboxylic acids as microbiocidesNAT PATENT DEV CORP·Filed 1975·Granted Mar 29, 1977·10 cites·12 claims
- 2379US4957436ADental pump system for chemical caries removalNAT PATENT DEV CORP·Filed 1986·Granted Sep 18, 1990·52 cites·19 claims
- 2479US4012842ADental treatment method and apparatusNAT PATENT DEV CORP·Filed 1974·Granted Mar 22, 1977·44 cites·11 claims
- 2578US3998945ADental treatmentNAT PATENT DEV CORP·Filed 1975·Granted Dec 21, 1976·56 cites·11 claims
- 2675US4303066ABurn dressingNAT PATENT DEV CORP·Filed 1979·Granted Dec 1, 1981·63 cites·29 claims
- 2768US4388436APermeable contact lensNAT PATENT DEV CORP·Filed 1981·Granted Jun 14, 1983·21 cites·26 claims
- 2865US4039501APlasticized hydrophilic polymersNAT PATENT DEV CORP·Filed 1975·Granted Aug 2, 1977·15 cites·24 claims
- 2964US5468811AHydrophilic composite polymer articles formed from a settable paste comprising a mixture of hydrophilic polymer and unsaturated monomerNAT PATENT DEV CORP·Filed 1994·Granted Nov 21, 1995·60 cites·21 claims
- 3063US4153349ASoft contact lens with thin edgeNAT PATENT DEV CORP·Filed 1974·Granted May 8, 1979·19 cites·18 claims
- 3162US4169795ALow profile filterNAT PATENT DEV CORP·Filed 1977·Granted Oct 2, 1979·17 cites·5 claims
- 3261US5045266AProcess of making a hearing aid earmold in situNAT PATENT DEV CORP·Filed 1989·Granted Sep 3, 1991·21 cites·20 claims
- 3361US4153042ASolar collectorNAT PATENT DEV CORP·Filed 1977·Granted May 8, 1979·22 cites·8 claims
- 3459US4135302AEndodontic therapeutic device and proceduresNAT PATENT DEV CORP·Filed 1975·Granted Jan 23, 1979·20 cites·2 claims
- 3559US4031110AMethod of preparing 3,3-Bis (chloromethyl) oxetaneNAT PATENT DEV CORP·Filed 1976·Granted Jun 21, 1977·4 cites·14 claims
- 3656US3935368AVinyl chloride flooring material coated with a hydrophilic acrylic polymerNAT PATENT DEV CORP·Filed 1971·Granted Jan 27, 1976·11 cites·2 claims
- 3755US4141755AMasonry construction member impregnated with a copolymer of hydroxy alkyl acrylate or methacrylate with long chain alkyl acrylate or methacrylateNAT PATENT DEV CORP·Filed 1974·Granted Feb 27, 1979·14 cites·19 claims
- 3854US4606342ACautery device having a variable temperature cautery tipNAT PATENT DEV CORP·Filed 1985·Granted Aug 19, 1986·72 cites·10 claims
- 3947US3991107AHaloamine transferNAT PATENT DEV CORP·Filed 1972·Granted Nov 9, 1976·5 cites·12 claims
- 4043US5177154AEnvironmental coating solutionNAT PATENT DEV CORP·Filed 1991·Granted Jan 5, 1993·5 cites·7 claims
- 4139US4055663AHalogenated acylamino acids as fungicidesNAT PATENT DEV CORP·Filed 1974·Granted Oct 25, 1977·8 cites·13 claims
- 4238US4736872ADisposable tint pack assembly for contact lens tintingNAT PATENT DEV CORP·Filed 1987·Granted Apr 12, 1988·8 cites·21 claims
- 4336US4173223AChamber assembly for infusion and transfusion apparatusNAT PATENT DEV CORP·Filed 1977·Granted Nov 6, 1979·14 cites·11 claims
- 4433US4738530AInspection deviceNAT PATENT DEV CORP·Filed 1986·Granted Apr 19, 1988·4 cites·15 claims
- 4533US4121587ARoot canal delivery syringeNAT PATENT DEV CORP·Filed 1977·Granted Oct 24, 1978·12 cites·4 claims
- 4630US4075007AN-chloro-chloroacetamides as herbicidesNAT PATENT DEV CORP·Filed 1974·Granted Feb 21, 1978·0 cites·27 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →