Inventor · disambiguated record
Peter W. Shackle
Also filed as: SHACKLE PETER · SHACKLE PETER W
61 granted patents·4 pending applications·1,381 citations·filing 1976–2016
99Inventor score
Files withENERGY SAVINGS INC14BELL TELEPHONE LABOR INC11MOTOROLA LIGHTING INC7SHACKLE PETER W7UNIVERSAL LIGHTING TECH INC7
Top patents by PatentIndex Score
65 records- 0194US9491821B2AC-powered LED light engineSHACKLE PETER W·Filed 2015·Granted Nov 8, 2016·13 cites·13 claims
- 0293US5925990AMicroprocessor controlled electronic ballastENERGY SAVINGS INC·Filed 1997·Granted Jul 20, 1999·202 cites·32 claims
- 0391US5539281AExternally dimmable electronic ballastENERGY SAVINGS INC·Filed 1995·Granted Jul 23, 1996·104 cites·9 claims
- 0489US8018173B2Ballasts for fluorescent lampsFULHAM COMPANY LTD·Filed 2006·Granted Sep 13, 2011·26 cites·68 claims
- 0589US7019662B2LED drive for generating constant light outputUNIVERSAL LIGHTING TECH INC·Filed 2003·Granted Mar 28, 2006·47 cites·14 claims
- 0688US5973455AElectronic ballast with filament cut-outENERGY SAVINGS INC·Filed 1998·Granted Oct 26, 1999·82 cites·15 claims
- 0787US5416388AElectronic ballast with two transistors and two transformersMOTOROLA LIGHTING INC·Filed 1993·Granted May 16, 1995·59 cites·7 claims
- 0885US8203276B2Phase controlled dimming LED driver system and method thereofSHACKLE PETER W·Filed 2008·Granted Jun 19, 2012·32 cites·29 claims
- 0984US5500576ALow height ballast for fluorescent lampsENERGY SAVINGS INC·Filed 1994·Granted Mar 19, 1996·50 cites·13 claims
- 1082US9167641B2Phase controlled dimming LED driver system and method thereofSHACKLE PETER W·Filed 2011·Granted Oct 20, 2015·8 cites·15 claims
- 1182US5493180ALamp protective, electronic ballastENERGY SAVINGS INC A DELAWARE·Filed 1995·Granted Feb 20, 1996·65 cites·9 claims
- 1280US4242697ADielectrically isolated high voltage semiconductor devicesBELL TELEPHONE LABOR INC·Filed 1979·Granted Dec 30, 1980·34 cites·17 claims
- 1379US5396155ASelf-dimming electronic ballastENERGY SAVINGS INC·Filed 1994·Granted Mar 7, 1995·45 cites·14 claims
- 1477US6420838B1Fluorescent lamp ballast with integrated circuitFiled 2001·Granted Jul 16, 2002·27 cites·22 claims
- 1577US6023132AElectronic ballast deriving auxilliary power from lamp outputENERGY SAVINGS INC·Filed 1998·Granted Feb 8, 2000·44 cites·12 claims
- 1675US5113236AIntegrated circuit device particularly adapted for high voltage applicationsPHILIPS CORP·Filed 1990·Granted May 12, 1992·53 cites·14 claims
- 1775US4656366AControl circuitry using two branch circuits for high voltage solid-state switchesAMERICAN TELEPHONE & TELEGRAPH·Filed 1982·Granted Apr 7, 1987·20 cites·7 claims
- 1871US5461287ABooster driven inverter ballast employing the output from the inverter to trigger the boosterENERGY SAVINGS INC·Filed 1994·Granted Oct 24, 1995·28 cites·7 claims
- 1969US5399944ABallast circuit for driving gas dischargeMOTOROLA LIGHTING INC·Filed 1993·Granted Mar 21, 1995·29 cites·18 claims
- 2068US5747941AElectronic ballast that monitors direct current through lamp filamentsENERGY SAVINGS INC·Filed 1995·Granted May 5, 1998·29 cites·5 claims
- 2167US6437520B1Electronic ballast with cross-coupled outputsENERGY SAVINGS INC·Filed 2000·Granted Aug 20, 2002·13 cites·15 claims
- 2266US5493181ACapacitive lamp out detectorENERGY SAVINGS INC·Filed 1995·Granted Feb 20, 1996·27 cites·17 claims
- 2364US7098607B2Electronic ballast with lossless snubber capacitor circuitUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·7 cites·20 claims
- 2464US6791275B2Low pressure gas discharge lamp ballast with on-off indicatorROBERTSON WORLDWIDE INC·Filed 2002·Granted Sep 14, 2004·10 cites·33 claims
- 2564US5412287ACircuit for powering a gas discharge lampMOTOROLA LIGHTING INC·Filed 1993·Granted May 2, 1995·24 cites·14 claims
- 2663US8736189B2Electronic ballasts with high-frequency-current blocking component or positive current feedbackSHACKLE PETER W·Filed 2006·Granted May 27, 2014·2 cites·8 claims
- 2761US5396153AProtection circuit for electronic ballasts which use charge pump power factor correctionMOTOROLA LIGHTING INC·Filed 1993·Granted Mar 7, 1995·19 cites·9 claims
- 2861US4323942ASolid-state protector circuitry using gated diode switchBELL TELEPHONE LABOR INC·Filed 1980·Granted Apr 6, 1982·16 cites·7 claims
- 2959US4167748AHigh voltage monolithic transistor circuitBELL TELEPHONE LABOR INC·Filed 1978·Granted Sep 11, 1979·12 cites·12 claims
- 3058US9723671B2AC-powered LED light engineSHACKLE PETER W·Filed 2016·Granted Aug 1, 2017·0 cites·3 claims
- 3157US4608590AHigh voltage dielectrically isolated solid-state switchAT & T BELL LAB·Filed 1981·Granted Aug 26, 1986·20 cites·7 claims
- 3256US9585212B2AC-powered LED light engineSHACKLE PETER W·Filed 2015·Granted Feb 28, 2017·0 cites·20 claims
- 3355US7098606B2Electronic ballast with open circuit voltage control and cable compensationUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·5 cites·20 claims
- 3455US5363018ABallast circuit equipped with ground fault detectorMOTOROLA LIGHTING INC·Filed 1993·Granted Nov 8, 1994·16 cites·17 claims
- 3555US2014252991A1Electronic ballastsFULHAM COMPANY LTD·Filed 2014·Application pending·0 cites
- 3655US2018295687A1Ac-powered led light engineSHACKLE PETER W·Filed 2015·Application pending·0 cites
- 3754US5982113AElectronic ballast producing voltage having trapezoidal envelope for instant start lampsENERGY SAVINGS INC·Filed 1997·Granted Nov 9, 1999·13 cites·5 claims
- 3853US5373218AToggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lampsMOTOROLA LIGHTING INC·Filed 1993·Granted Dec 13, 1994·18 cites·15 claims
- 3953US4345163AControl circuitry for high voltage solid-state switchesBELL TELEPHONE LABOR INC·Filed 1980·Granted Aug 17, 1982·9 cites·3 claims
- 4052US7423386B2Power supply circuits and methods for supplying stable power to control circuitry in an electronic ballastUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Sep 9, 2008·9 cites·24 claims
- 4152US7098608B2Lossless circuit for sampling of lamp voltageUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Aug 29, 2006·4 cites·20 claims
- 4252US6137239AElectronic ballast with selective load controlENERGY SAVINGS INC·Filed 1999·Granted Oct 24, 2000·16 cites·16 claims
- 4352US4131910AHigh voltage semiconductor devicesBELL TELEPHONE LABOR INC·Filed 1977·Granted Dec 26, 1978·15 cites·11 claims
- 4451US4271445ASolid-state protector circuitry using gated diode switchBELL TELEPHONE LABOR INC·Filed 1978·Granted Jun 2, 1981·9 cites·4 claims
- 4551US4232328ADielectrically-isolated integrated circuit complementary transistors for high voltage useBELL TELEPHONE LABOR INC·Filed 1978·Granted Nov 4, 1980·13 cites·6 claims
- 4648US8994293B2Single phase bridgeless boost converter for LED lighting applicationsROBERTSON TRANSFORMER CO·Filed 2013·Granted Mar 31, 2015·0 cites·20 claims
- 4748US7432660B2IC-based low cost reliable electronic ballast with multiple striking attempts and end of lamp life protectionUNIVERSAL LIGHTING TECH INC·Filed 2004·Granted Oct 7, 2008·7 cites·17 claims
- 4848US4309715AIntegral turn-on high voltage switchBELL TELEPHONE LABOR INC·Filed 1979·Granted Jan 5, 1982·7 cites·10 claims
- 4948US4250409AControl circuitry using a pull-down transistor for high voltage field terminated diode solid-state switchesBELL TELEPHONE LABOR INC·Filed 1979·Granted Feb 10, 1981·7 cites·11 claims
- 5047US2010253245A1Method, system and current limiting circuit for preventing excess current surgesLIGHTECH ELECTRONICS IND LTD·Filed 2009·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →