Assignee
PERKIN ELMER LTD
28 granted patents·487 citations·filing 1975–1998
Top patents by PatentIndex Score
28 records- 0183US6006140AInfrared microscope stage controlPERKIN ELMER LTD·Filed 1996·Granted Dec 21, 1999·66 cites·20 claims
- 0283US5914780ADigitisation of interferograms in Fourier transform spectroscopyPERKIN ELMER LTD·Filed 1997·Granted Jun 22, 1999·80 cites·26 claims
- 0382US5808739AInterferometer having combined beam splitter compensator platePERKIN ELMER LTD·Filed 1997·Granted Sep 15, 1998·83 cites·18 claims
- 0475US4350037APersonal gas monitorPERKIN ELMER LTD·Filed 1980·Granted Sep 21, 1982·40 cites·36 claims
- 0558US5974210AProbe for spectroscopic analysisPERKIN ELMER LTD·Filed 1998·Granted Oct 26, 1999·21 cites·11 claims
- 0657US5450196ATime-resolved Fourier-transform optical spectroscopy utilizing in-phase and quadrature cyclic perturbation data valuesPERKIN ELMER LTD·Filed 1994·Granted Sep 12, 1995·20 cites·18 claims
- 0755US4040741APolarized grating optical odometerPERKIN ELMER LTD·Filed 1976·Granted Aug 9, 1977·11 cites·14 claims
- 0852US5946131AMicroscope aperture controlPERKIN ELMER LTD·Filed 1997·Granted Aug 31, 1999·18 cites·7 claims
- 0952US5729018AAir crystal and assembly for infrared microspectroscopyPERKIN ELMER LTD·Filed 1996·Granted Mar 17, 1998·21 cites·10 claims
- 1046US4429736AConcentration in time of a gas component entrained in a carrier gasPERKIN ELMER LTD·Filed 1981·Granted Feb 7, 1984·12 cites·29 claims
- 1146US4062021AInk recorder with grooved pressure roller feedPERKIN ELMER LTD·Filed 1976·Granted Dec 6, 1977·6 cites·13 claims
- 1244US4079256ARatio-recording spectrophotometer with suppression of uncompensationPERKIN ELMER LTD·Filed 1977·Granted Mar 14, 1978·10 cites·17 claims
- 1344US4073198AApparatus for changing the speed ratio between first and second displaceable membersPERKIN ELMER LTD·Filed 1976·Granted Feb 14, 1978·7 cites·22 claims
- 1443US5317378AEnhancing emission of excited radiation in an analytical sample subjected to exciting radiationPERKIN ELMER LTD·Filed 1991·Granted May 31, 1994·11 cites·39 claims
- 1542US5271230ALiquid gas temperature control apparatus for and methods of depressing temperature to and maintaining it at a chosen depressed valuePERKIN ELMER LTD·Filed 1991·Granted Dec 21, 1993·19 cites·39 claims
- 1642US4082461AOptical slit control apparatusPERKIN ELMER LTD·Filed 1976·Granted Apr 4, 1978·7 cites·18 claims
- 1742US4049970APulsed radiation detector systemPERKIN ELMER LTD·Filed 1976·Granted Sep 20, 1977·7 cites·10 claims
- 1840US3975099AOptical null apparatusPERKIN ELMER LTD·Filed 1975·Granted Aug 17, 1976·7 cites·13 claims
- 1939US4453225ACounteracting the effect of phase shift changes between two quantities in extracting their ratioPERKIN ELMER LTD·Filed 1981·Granted Jun 5, 1984·6 cites·21 claims
- 2038US5703681ACarrier and its use in the preparation of samples for spectroscopyPERKIN ELMER LTD·Filed 1996·Granted Dec 30, 1997·5 cites·9 claims
- 2137US4290696ASpectrophotometric systemPERKIN ELMER LTD·Filed 1979·Granted Sep 22, 1981·6 cites·11 claims
- 2236US4132481ACross-talk balancing circuit for spectrophotometersPERKIN ELMER LTD·Filed 1976·Granted Jan 2, 1979·4 cites·16 claims
- 2335US5877435ACarrier and its use in the preparation of samples for spectroscopyPERKIN ELMER LTD·Filed 1997·Granted Mar 2, 1999·3 cites·6 claims
- 2434US4438329AMinimizing the effect of spurious photodetector currents in flash spectrofluorimetryPERKIN ELMER LTD·Filed 1982·Granted Mar 20, 1984·8 cites·15 claims
- 2532US4130784AApparatus for compensating ordinate phase lag in a plotting apparatusPERKIN ELMER LTD·Filed 1976·Granted Dec 19, 1978·1 cites·12 claims
- 2629US4178121ARepetitive-cycle object handling apparatusPERKIN ELMER LTD·Filed 1978·Granted Dec 11, 1979·3 cites·15 claims
- 2728US4221484ASelection of spectrophotometric operating parametersPERKIN ELMER LTD·Filed 1978·Granted Sep 9, 1980·1 cites·11 claims
- 2825US5825491AInterferometer alignment system utilizing a step calibrationPERKIN ELMER LTD·Filed 1996·Granted Oct 20, 1998·4 cites·11 claims
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