Assignee
LEARONAL INC
US·53 granted patents·1,312 citations·filing 1978–1999
Top patents by PatentIndex Score
53 records- 0196US4871429ALimiting tin sludge formation in tin or tin/lead electroplating solutionsLEARONAL INC·Filed 1988·Granted Oct 3, 1989·75 cites·21 claims
- 0292US4378270AMethod of etching circuit boards and recovering copper from the spent etch solutionsLEARONAL INC·Filed 1981·Granted Mar 29, 1983·51 cites·11 claims
- 0391US6071398AProgrammed pulse electroplating processLEARONAL INC·Filed 1997·Granted Jun 6, 2000·78 cites·22 claims
- 0491US4628165AElectrical contacts and methods of making contacts by electrodepositionLEARONAL INC·Filed 1985·Granted Dec 9, 1986·48 cites·21 claims
- 0589US5312539AElectrolytic tin plating methodLEARONAL INC·Filed 1993·Granted May 17, 1994·47 cites·9 claims
- 0689US5174887AHigh speed electroplating of tinplateLEARONAL INC·Filed 1990·Granted Dec 29, 1992·56 cites·24 claims
- 0789US4565609ABath and process for plating tin, lead and tin-lead alloysLEARONAL INC·Filed 1985·Granted Jan 21, 1986·43 cites·24 claims
- 0888US5302278ACyanide-free plating solutions for monovalent metalsLEARONAL INC·Filed 1993·Granted Apr 12, 1994·43 cites·28 claims
- 0988US4565610ABath and process for plating lead and lead/tin alloysLEARONAL INC·Filed 1985·Granted Jan 21, 1986·42 cites·8 claims
- 1086US5750018ACyanide-free monovalent copper electroplating solutionsLEARONAL INC·Filed 1997·Granted May 12, 1998·52 cites·20 claims
- 1185US5256275AElectroplated gold-copper-silver alloysLEARONAL INC·Filed 1992·Granted Oct 26, 1993·35 cites·35 claims
- 1284US4681670ABath and process for plating tin-lead alloysLEARONAL INC·Filed 1986·Granted Jul 21, 1987·33 cites·23 claims
- 1384US4599149AProcess for electroplating tin, lead and tin-lead alloys and baths thereforLEARONAL INC·Filed 1983·Granted Jul 8, 1986·23 cites·16 claims
- 1483US4701244ABath and process for electroplating tin, lead and tin/alloysLEARONAL INC·Filed 1985·Granted Oct 20, 1987·31 cites·36 claims
- 1583US4617097AProcess and electrolyte for electroplating tin, lead or tin-lead alloysLEARONAL INC·Filed 1985·Granted Oct 14, 1986·32 cites·20 claims
- 1682US4717460ATin lead electroplating solutionsLEARONAL INC·Filed 1987·Granted Jan 5, 1988·28 cites·18 claims
- 1782US4591415APlating baths and methods for electro-deposition of gold or gold alloysLEARONAL INC·Filed 1985·Granted May 27, 1986·38 cites·21 claims
- 1881US4640746ABath and process for plating tin/lead alloys on composite substratesLEARONAL INC·Filed 1985·Granted Feb 3, 1987·28 cites·9 claims
- 1977US4490220AElectrolytic copper plating solutionsLEARONAL INC·Filed 1984·Granted Dec 25, 1984·23 cites·26 claims
- 2076US5085744AElectroplated gold-copper-zinc alloysLEARONAL INC·Filed 1990·Granted Feb 4, 1992·23 cites·42 claims
- 2174US5378347AReducing tin sludge in acid tin platingLEARONAL INC·Filed 1993·Granted Jan 3, 1995·27 cites·19 claims
- 2274US4520046AMetal plating on plasticsLEARONAL INC·Filed 1983·Granted May 28, 1985·30 cites·16 claims
- 2373US4994155AHigh speed tin, lead or tin/lead alloy electroplatingLEARONAL INC·Filed 1989·Granted Feb 19, 1991·21 cites·18 claims
- 2473US4233344AMethod of improving the adhesion of electroless metal deposits employing colloidal copper activatorLEARONAL INC·Filed 1978·Granted Nov 11, 1980·20 cites·5 claims
- 2572US4904354AAkaline cyanide-free Cu-Zu strike baths and electrodepositing processes for the use thereofLEARONAL INC·Filed 1988·Granted Feb 27, 1990·29 cites·33 claims
- 2672US4880507ATin, lead or tin/lead alloy electrolytes for high speed electroplatingLEARONAL INC·Filed 1988·Granted Nov 14, 1989·19 cites·31 claims
- 2771US5066367ALimiting tin sludge formation in tin or tin/lead electroplating solutionsLEARONAL INC·Filed 1990·Granted Nov 19, 1991·19 cites·24 claims
- 2870US4478692AElectrodeposition of palladium-silver alloysLEARONAL INC·Filed 1983·Granted Oct 23, 1984·13 cites·11 claims
- 2968US5492615ACyclodextrin stabilization of organic metal finishing additives in aqueous metal treating bathsLEARONAL INC·Filed 1994·Granted Feb 20, 1996·23 cites·21 claims
- 3068US4465563AElectrodeposition of palladium-silver alloysLEARONAL INC·Filed 1982·Granted Aug 14, 1984·12 cites·13 claims
- 3166US4847114APreparation of printed circuit boards by selective metallizationLEARONAL INC·Filed 1988·Granted Jul 11, 1989·26 cites·33 claims
- 3265US6210556B1Electrolyte and tin-silver electroplating processLEARONAL INC·Filed 1999·Granted Apr 3, 2001·32 cites·14 claims
- 3362US4399006ASilver platingLEARONAL INC·Filed 1979·Granted Aug 16, 1983·11 cites·6 claims
- 3461US5094726ALimiting tin sludge formation in tin or tin-lead electroplating solutionsLEARONAL INC·Filed 1990·Granted Mar 10, 1992·14 cites·13 claims
- 3561US4545868APalladium platingLEARONAL INC·Filed 1984·Granted Oct 8, 1985·10 cites·15 claims
- 3660US4762560ACopper colloid and method of activating insulating surfaces for subsequent electroplatingLEARONAL INC·Filed 1987·Granted Aug 9, 1988·18 cites·16 claims
- 3759USRE35513ECyanide-free plating solutions for monovalent metalsLEARONAL INC·Filed 1996·Granted May 20, 1997·12 cites·29 claims
- 3858US4877450AFormaldehyde-free electroless copper plating solutionsLEARONAL INC·Filed 1989·Granted Oct 31, 1989·17 cites·22 claims
- 3958US4582729AProcess for electro-magnetic interference shieldingLEARONAL INC·Filed 1983·Granted Apr 15, 1986·15 cites·17 claims
- 4057US4247372ASilver platingLEARONAL INC·Filed 1978·Granted Jan 27, 1981·9 cites·7 claims
- 4152US5522972ANickel hypophosphite manufactureLEARONAL INC·Filed 1994·Granted Jun 4, 1996·9 cites·38 claims
- 4252US5427677AFlux for reflowing tinplateLEARONAL INC·Filed 1994·Granted Jun 27, 1995·11 cites·24 claims
- 4351US5106473AProcess for metallizing a through-hole boardLEARONAL INC·Filed 1991·Granted Apr 21, 1992·22 cites·16 claims
- 4450US4759952AProcess for printed circuit board manufactureLEARONAL INC·Filed 1986·Granted Jul 26, 1988·14 cites·23 claims
- 4547US4622110APalladium platingLEARONAL INC·Filed 1985·Granted Nov 11, 1986·6 cites·2 claims
- 4642US4681630AMethod of making copper colloid for activating insulating surfacesLEARONAL INC·Filed 1986·Granted Jul 21, 1987·9 cites·17 claims
- 4741US4741818AAlkaline baths and methods for electrodeposition of palladium and palladium alloysLEARONAL INC·Filed 1987·Granted May 3, 1988·4 cites·46 claims
- 4840US4919720AElectroless gold plating solutionsLEARONAL INC·Filed 1988·Granted Apr 24, 1990·11 cites·30 claims
- 4940US4556587AProcess for electro-magnetic interference shieldingLEARONAL INC·Filed 1983·Granted Dec 3, 1985·7 cites·13 claims
- 5033US5578182AElectrolytic production of hypophosphorous acidLEARONAL INC·Filed 1995·Granted Nov 26, 1996·4 cites·16 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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