Inventor · disambiguated record
Bertram C. Johnson
Also filed as: JOHNSON BERTRAM · JOHNSON BERTRAM C
15 granted patents·1 pending application·417 citations·filing 1975–2017
94Inventor score
Files withSPECTRA PHYSICS7SPECTRA PHYSICS LASERS INC3LUMENTUM OPERATIONS LLC2WILDT MELLOR BROMLEY LTD2BENTLEY ENG CO LTD1
Top patents by PatentIndex Score
16 records- 0196US4019156AActive/passive mode-locked laser oscillatorUS ENERGY·Filed 1975·Granted Apr 19, 1977·55 cites·3 claims
- 0292US4873692APulsed tunable solid state laserSPECTRA PHYSICS·Filed 1988·Granted Oct 10, 1989·54 cites·35 claims
- 0387US9568803B2Cascaded optical harmonic generationLUMENTUM OPERATIONS LLC·Filed 2016·Granted Feb 14, 2017·3 cites·20 claims
- 0484US4872181ALaser resonator with laser medium exhibiting thermally induced birefringenceSPECTRA PHYSICS·Filed 1988·Granted Oct 3, 1989·33 cites·19 claims
- 0583US4918395AMultipass laser amplifier with at least one expanded passSPECTRA PHYSICS·Filed 1988·Granted Apr 17, 1990·30 cites·47 claims
- 0682US5390211AOptical parametric oscillator with unstable resonatorSPECTRA PHYSICS LASERS INC·Filed 1993·Granted Feb 14, 1995·61 cites·50 claims
- 0782US4404821AYarn feeder and changer unitWILDT MELLOR BROMLEY LTD·Filed 1980·Granted Sep 20, 1983·17 cites·12 claims
- 0881US5272713AHigh repetition rate pulsed laserSPECTRA PHYSICS LASERS INC·Filed 1992·Granted Dec 21, 1993·53 cites·52 claims
- 0976US5001716ATunable electro-optic Q-switch, and lasers using sameSPECTRA PHYSICS·Filed 1990·Granted Mar 19, 1991·40 cites·24 claims
- 1071US4894837AAbsorbing filter in pump cavity for control of beam qualitySPECTRA PHYSICS·Filed 1988·Granted Jan 16, 1990·18 cites·37 claims
- 1167US4955725ALaser oscillator/amplifier with compensation for stress birefringenceSPECTRA PHYSICS·Filed 1989·Granted Sep 11, 1990·16 cites·23 claims
- 1266US4935932AApparatus using induced birefringence to improve laser beam qualitySPECTRA PHYSICS·Filed 1988·Granted Jun 19, 1990·16 cites·28 claims
- 1359US2017219912A1Cascaded optical harmonic generationLUMENTUM OPERATIONS LLC·Filed 2017·Application pending·0 cites
- 1456US5477378AMultiple crystal non-linear frequency conversion apparatusSPECTRA PHYSICS LASERS INC·Filed 1994·Granted Dec 19, 1995·20 cites·33 claims
- 1536US4612785ADials for circular knitting machinesBENTLEY ENG CO LTD·Filed 1984·Granted Sep 23, 1986·1 cites·2 claims
- 1620US4253316AShogging mechanismsWILDT MELLOR BROMLEY LTD·Filed 1978·Granted Mar 3, 1981·0 cites·8 claims
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