Assignee
OAK INDUSTRIES INC
86 granted patents·4,163 citations·filing 1973–1997
Top patents by PatentIndex Score
86 records- 0199US4317013AMembrane switch with universal spacer meansOAK INDUSTRIES INC·Filed 1980·Granted Feb 23, 1982·146 cites·15 claims
- 0298US4559426AMembrane switch and components having means for preventing creepOAK INDUSTRIES INC·Filed 1980·Granted Dec 17, 1985·117 cites·14 claims
- 0398US4425579ACatv converter with keylock to favorite channelsOAK INDUSTRIES INC·Filed 1981·Granted Jan 10, 1984·454 cites·3 claims
- 0496US4418239AFlexible connector with interconnection between conductive tracesOAK INDUSTRIES INC·Filed 1981·Granted Nov 29, 1983·107 cites·10 claims
- 0596US4054860AHall effect rotary switchOAK INDUSTRIES INC·Filed 1975·Granted Oct 18, 1977·79 cites·18 claims
- 0695US4531020AMulti-layer encryption system for the broadcast of encrypted informationOAK INDUSTRIES INC·Filed 1982·Granted Jul 23, 1985·433 cites·5 claims
- 0795US4323922ATelevision coding system with channel level identificationOAK INDUSTRIES INC·Filed 1979·Granted Apr 6, 1982·151 cites·12 claims
- 0894US5191840ASpike driving machine having pushing and percussive spike driving functionsOAK INDUSTRIES INC·Filed 1991·Granted Mar 9, 1993·43 cites·26 claims
- 0994US4454543ADynamic video scramblingOAK INDUSTRIES INC·Filed 1981·Granted Jun 12, 1984·112 cites·4 claims
- 1094US4353088ACoding and decoding system for video and audio signalsOAK INDUSTRIES INC·Filed 1980·Granted Oct 5, 1982·128 cites·2 claims
- 1193US5398616AAutomatic rail fastener applicatorOAK INDUSTRIES INC·Filed 1993·Granted Mar 21, 1995·38 cites·20 claims
- 1293US5038914AAutomatic tie plate sorting conveyorOAK INDUSTRIES INC·Filed 1990·Granted Aug 13, 1991·46 cites·6 claims
- 1393US4531021ATwo level encripting of RF signalsOAK INDUSTRIES INC·Filed 1984·Granted Jul 23, 1985·185 cites·2 claims
- 1493US4340906AVideo signal coding by video signal polarity reversal on the basis of brightness level comparisonOAK INDUSTRIES INC·Filed 1980·Granted Jul 20, 1982·123 cites·10 claims
- 1592US4688247APay TV scrambling by audio encryptionOAK INDUSTRIES INC·Filed 1986·Granted Aug 18, 1987·110 cites·9 claims
- 1692US4145717ASubscription TV audio carrier recovery systemOAK INDUSTRIES INC·Filed 1977·Granted Mar 20, 1979·121 cites·11 claims
- 1792US4112464ASubscription TV decoder logic systemOAK INDUSTRIES INC·Filed 1977·Granted Sep 5, 1978·123 cites·9 claims
- 1892US4024575ACatv sine wave coding systemOAK INDUSTRIES INC·Filed 1975·Granted May 17, 1977·140 cites·8 claims
- 1991US4403272AMembrane switch interconnect tail and printed circuit board connectionOAK INDUSTRIES INC·Filed 1980·Granted Sep 6, 1983·43 cites·6 claims
- 2091US4249044AMembrane switch with means for preventing contamination of the interior thereofOAK INDUSTRIES INC·Filed 1979·Granted Feb 3, 1981·32 cites·12 claims
- 2190US4433223APressure-sensitive adhesive and application thereofOAK INDUSTRIES INC·Filed 1981·Granted Feb 21, 1984·35 cites·5 claims
- 2290US4424532ACoding and decoding system for video and audio signalsOAK INDUSTRIES INC·Filed 1983·Granted Jan 3, 1984·135 cites·5 claims
- 2389US4398074ALow profile switch having a sealed interiorOAK INDUSTRIES INC·Filed 1981·Granted Aug 9, 1983·40 cites·8 claims
- 2489US4061988AHall effect linear motion switchOAK INDUSTRIES INC·Filed 1976·Granted Dec 6, 1977·28 cites·9 claims
- 2588US4503112APrinted circuit materialOAK INDUSTRIES INC·Filed 1983·Granted Mar 5, 1985·58 cites·6 claims
- 2688US4313132ACable TV security meansOAK INDUSTRIES INC·Filed 1979·Granted Jan 26, 1982·115 cites·8 claims
- 2787US4792376AApparatus for the sublimation printing of keyboard capsOAK INDUSTRIES INC·Filed 1987·Granted Dec 20, 1988·36 cites·10 claims
- 2887US4633309ACable television master/slave decoder controlOAK INDUSTRIES INC·Filed 1985·Granted Dec 30, 1986·66 cites·11 claims
- 2986US5465667AModular railway maintenance systemOAK INDUSTRIES INC·Filed 1993·Granted Nov 14, 1995·29 cites·3 claims
- 3086US4942822AMethod and apparatus for automatically setting rail tie platesOAK INDUSTRIES INC·Filed 1988·Granted Jul 24, 1990·58 cites·26 claims
- 3186US4394419APrinted circuit materialOAK INDUSTRIES INC·Filed 1981·Granted Jul 19, 1983·44 cites·10 claims
- 3285US4974518AAutomatic tie plate setting machineOAK INDUSTRIES INC·Filed 1988·Granted Dec 4, 1990·57 cites·43 claims
- 3385US4907686AAutomatic high speed tie plate reorienting mechanismOAK INDUSTRIES INC·Filed 1988·Granted Mar 13, 1990·38 cites·31 claims
- 3485US4420744AKeyboard crosspoint encoder having N-key rolloverOAK INDUSTRIES INC·Filed 1981·Granted Dec 13, 1983·36 cites·6 claims
- 3582US4391845AMethod of making a membrane switchOAK INDUSTRIES INC·Filed 1981·Granted Jul 5, 1983·23 cites·4 claims
- 3681US4320573AMethod of manufacture for bendable membrane switchOAK INDUSTRIES INC·Filed 1980·Granted Mar 23, 1982·22 cites·7 claims
- 3780US4135157APole mounted converterOAK INDUSTRIES INC·Filed 1977·Granted Jan 16, 1979·26 cites·12 claims
- 3879US4468145AKeyboard space bar stabilizerOAK INDUSTRIES INC·Filed 1983·Granted Aug 28, 1984·19 cites·6 claims
- 3978US4553009AKeyboard switch with pivotal actuator leverOAK INDUSTRIES INC·Filed 1983·Granted Nov 12, 1985·19 cites·11 claims
- 4077US4384796AKeyboard space bar stabilizerOAK INDUSTRIES INC·Filed 1982·Granted May 24, 1983·18 cites·4 claims
- 4176US4709266ASatellite scrambling communication network using geographically separated uplinksOAK INDUSTRIES INC·Filed 1985·Granted Nov 24, 1987·50 cites·6 claims
- 4276US4479040ATactile feel switch with positive switch actuationOAK INDUSTRIES INC·Filed 1983·Granted Oct 23, 1984·18 cites·8 claims
- 4376US4307275AMembrane switch construction and method for making sameOAK INDUSTRIES INC·Filed 1980·Granted Dec 22, 1981·21 cites·29 claims
- 4473US4002873AIlluminated pushbutton switchOAK INDUSTRIES INC·Filed 1975·Granted Jan 11, 1977·15 cites·1 claims
- 4571US4251683AInterconnect tail for a membrane switchOAK INDUSTRIES INC·Filed 1979·Granted Feb 17, 1981·16 cites·11 claims
- 4671US4054861APulsing type hall effect rotary switchOAK INDUSTRIES INC·Filed 1976·Granted Oct 18, 1977·21 cites·9 claims
- 4771US4009357AAnti-static keylock switchOAK INDUSTRIES INC·Filed 1975·Granted Feb 22, 1977·15 cites·13 claims
- 4869US4016388AKeyboard switchOAK INDUSTRIES INC·Filed 1975·Granted Apr 5, 1977·16 cites·8 claims
- 4968US5253844AHairpin spike pulling tool and machine thereforOAK INDUSTRIES INC·Filed 1992·Granted Oct 19, 1993·28 cites·13 claims
- 5068US4405841AMovable member membrane switchOAK INDUSTRIES INC·Filed 1982·Granted Sep 20, 1983·13 cites·5 claims
Showing the top 50 of 86 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when OAK INDUSTRIES INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →