Assignee
SERVO CORP OF AMERICA
US·41 granted patents·1,487 citations·filing 1974–1997
Top patents by PatentIndex Score
41 records- 0196US4444990AHeat sensing deviceSERVO CORP OF AMERICA·Filed 1982·Granted Apr 24, 1984·553 cites·5 claims
- 0292US5331311ARailroad wheel temperature sensor with infrared arraySERVO CORP OF AMERICA·Filed 1992·Granted Jul 19, 1994·84 cites·17 claims
- 0390US4843885AAcoustic detection of bearing defectsSERVO CORP OF AMERICA·Filed 1988·Granted Jul 4, 1989·55 cites·8 claims
- 0488US3958104AMultiplexed optical scanner systemSERVO CORP OF AMERICA·Filed 1975·Granted May 18, 1976·48 cites·4 claims
- 0586US4790190AOn-line acoustic detection of bearing defectsSERVO CORP OF AMERICA·Filed 1987·Granted Dec 13, 1988·51 cites·16 claims
- 0685US4659043ARailroad hot box detectorSERVO CORP OF AMERICA·Filed 1984·Granted Apr 21, 1987·59 cites·7 claims
- 0783USD314919SHot box detector scanner housingSERVO CORP OF AMERICA·Filed 1988·Granted Feb 26, 1991·23 cites·1 claims
- 0880US5381700ATrain analysis system enhancement having threshold adjustment means for unidentified wheelsSERVO CORP OF AMERICA·Filed 1992·Granted Jan 17, 1995·48 cites·10 claims
- 0977US5150618AAcoustic bearing defect detectorSERVO CORP OF AMERICA·Filed 1990·Granted Sep 29, 1992·46 cites·18 claims
- 1075US5446451AOn board hot bearing detector system with fault detectionSERVO CORP OF AMERICA·Filed 1993·Granted Aug 29, 1995·40 cites·2 claims
- 1175US3941338ADirectional wheel detectorSERVO CORP OF AMERICA·Filed 1974·Granted Mar 2, 1976·38 cites·3 claims
- 1273US5448072AInfrared hot bearing and hot wheel detectorSERVO CORP OF AMERICA·Filed 1993·Granted Sep 5, 1995·48 cites·20 claims
- 1368US4323211ASelf adjusting wheel bearing heat signal processing circuitSERVO CORP OF AMERICA·Filed 1980·Granted Apr 6, 1982·22 cites·12 claims
- 1465US4848873AShutter adapted to self lock in closed and open positionsSERVO CORP OF AMERICA·Filed 1988·Granted Jul 18, 1989·26 cites·8 claims
- 1565US3999043APulse width detection circuit for electro-optical label reading systemSERVO CORP OF AMERICA·Filed 1975·Granted Dec 21, 1976·19 cites·2 claims
- 1664US5395078ALow speed wheel presence transducer for railroads with self calibrationSERVO CORP OF AMERICA·Filed 1993·Granted Mar 7, 1995·31 cites·16 claims
- 1763US5100243ASelf-calibrating hot wheel detector for railroadsSERVO CORP OF AMERICA·Filed 1990·Granted Mar 31, 1992·31 cites·5 claims
- 1863US4379330ARailroad car wheel detectorSERVO CORP OF AMERICA·Filed 1981·Granted Apr 5, 1983·19 cites·5 claims
- 1962US5029477AIntegrity test for acoustic bearing defect detectorSERVO CORP OF AMERICA·Filed 1990·Granted Jul 9, 1991·26 cites·17 claims
- 2058US4948976AMulti-wavelength band infrared detectorSERVO CORP OF AMERICA·Filed 1989·Granted Aug 14, 1990·29 cites·7 claims
- 2156US3935432AVariable color label for object identification systemSERVO CORP OF AMERICA·Filed 1975·Granted Jan 27, 1976·11 cites·18 claims
- 2255US4256278ARailway freight car identification systemSERVO CORP OF AMERICA·Filed 1979·Granted Mar 17, 1981·12 cites·6 claims
- 2354US5497003APyroelectric detector array with optical filter elementsSERVO CORP OF AMERICA·Filed 1995·Granted Mar 5, 1996·23 cites·8 claims
- 2449US5502307ASpun cast IR detector arrays and method of making the sameSERVO CORP OF AMERICA·Filed 1994·Granted Mar 26, 1996·15 cites·10 claims
- 2547US4002889ASelf-cleaning label for automatic object identification systemSERVO CORP OF AMERICA·Filed 1975·Granted Jan 11, 1977·9 cites·6 claims
- 2646US5477052AEarth sensor for satellites with radiance compensationSERVO CORP OF AMERICA·Filed 1994·Granted Dec 19, 1995·17 cites·12 claims
- 2746US4313583ARailroad car wheel bearing heat signal processing circuitSERVO CORP OF AMERICA·Filed 1980·Granted Feb 2, 1982·28 cites·10 claims
- 2844US5335995AResilient support for a railroad wheel heat sensorSERVO CORP OF AMERICA·Filed 1993·Granted Aug 9, 1994·12 cites·12 claims
- 2940US5620740ASpun cast IR detector arrays with integrated readout electronics and method of making the sameSERVO CORP OF AMERICA·Filed 1995·Granted Apr 15, 1997·12 cites·5 claims
- 3039US4441196ASpeed independent system for obtaining preselected numbers of samples from object moving along fixed pathSERVO CORP OF AMERICA·Filed 1980·Granted Apr 3, 1984·6 cites·11 claims
- 3139US4345274AObject identification system utilizing closed circuit televisionSERVO CORP OF AMERICA·Filed 1980·Granted Aug 17, 1982·6 cites·10 claims
- 3237US4268257AWheel simulatorSERVO CORP OF AMERICA·Filed 1979·Granted May 19, 1981·4 cites·6 claims
- 3337US4156227AJogging switch mechanismSERVO CORP OF AMERICA·Filed 1978·Granted May 22, 1979·3 cites·6 claims
- 3436US5747117AMethod of applying a film to a substrateSERVO CORP OF AMERICA·Filed 1997·Granted May 5, 1998·7 cites·9 claims
- 3536US4113211AHot box detector bearing discriminator circuitSERVO CORP OF AMERICA·Filed 1977·Granted Sep 12, 1978·8 cites·5 claims
- 3632US5455424AEarth sensor for satellitesSERVO CORP OF AMERICA·Filed 1994·Granted Oct 3, 1995·5 cites·14 claims
- 3732US4292639AQuasi-doppler direction finding equipmentSERVO CORP OF AMERICA·Filed 1979·Granted Sep 29, 1981·2 cites·8 claims
- 3829US5775646ASelf-powered horizon crossing indicatorSERVO CORP OF AMERICA·Filed 1995·Granted Jul 7, 1998·1 cites·2 claims
- 3927US5744801AEarth horizon sensor with staggered array of sensorsSERVO CORP OF AMERICA·Filed 1995·Granted Apr 28, 1998·10 cites·7 claims
- 4027US5497002APyroelectric crystal element and array mounting methodSERVO CORP OF AMERICA·Filed 1994·Granted Mar 5, 1996·0 cites·6 claims
- 4121US5620254AThermal detector modulation schemeSERVO CORP OF AMERICA·Filed 1995·Granted Apr 15, 1997·0 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →