Assignee
CALCOMP INC
US·99 granted patents·2,470 citations·filing 1987–1996
Top patents by PatentIndex Score
99 records- 0196US5381160ASee-through digitizer with clear conductive gridCALCOMP INC·Filed 1991·Granted Jan 10, 1995·315 cites·6 claims
- 0293US4859813ADigitizer tablet having electrical interconnect components on the writing substrateCALCOMP INC·Filed 1987·Granted Aug 22, 1989·173 cites·11 claims
- 0393US4827086ADigitizer cursor coil for reducing edge effectCALCOMP INC·Filed 1987·Granted May 2, 1989·171 cites·20 claims
- 0481US4907014ASafely retracting paper-cutting apparatus for a roll paper printerCALCOMP INC·Filed 1989·Granted Mar 6, 1990·35 cites·24 claims
- 0580US5525981ACordless digitizer transducer/cursor status transmission apparatus and methodCALCOMP INC·Filed 1994·Granted Jun 11, 1996·96 cites·9 claims
- 0680US5247138ACordless digitizer stylus status encoding and transmission schemeCALCOMP INC·Filed 1991·Granted Sep 21, 1993·88 cites·16 claims
- 0779US5335000AInk vapor aerosol pen for pen plottersCALCOMP INC·Filed 1992·Granted Aug 2, 1994·48 cites·25 claims
- 0879US4806707A3-Dimensional digitizer penCALCOMP INC·Filed 1988·Granted Feb 21, 1989·71 cites·19 claims
- 0978US4853499AGround switching technique for silkscreened digitizer gridsCALCOMP INC·Filed 1988·Granted Aug 1, 1989·59 cites·5 claims
- 1076US5710585AInk source for an ink delivery systemCALCOMP INC·Filed 1995·Granted Jan 20, 1998·40 cites·3 claims
- 1175US4734546ADigitizer system with loopback conductor gridCALCOMP INC·Filed 1987·Granted Mar 29, 1988·53 cites·27 claims
- 1273US5440327APolychromatic pen for pen plotters with color mixing at media surfaceCALCOMP INC·Filed 1992·Granted Aug 8, 1995·38 cites·21 claims
- 1372US4754288APen carousel, pen sensing and indexingCALCOMP INC·Filed 1987·Granted Jun 28, 1988·25 cites·9 claims
- 1471US5245363APen cleaning system for a pen plotterCALCOMP INC·Filed 1991·Granted Sep 14, 1993·29 cites·21 claims
- 1570US5204823AMethod and apparatus for high-speed layer thickness curing in 3-D model makingCALCOMP INC·Filed 1991·Granted Apr 20, 1993·34 cites·16 claims
- 1669US5373118AHalf normal frequency regime phase encoding in cordless digitizersCALCOMP INC·Filed 1993·Granted Dec 13, 1994·51 cites·19 claims
- 1768US5596351AInk level sensing on a pen carriage in a pen plotterCALCOMP INC·Filed 1993·Granted Jan 21, 1997·22 cites·20 claims
- 1868US5367934AMedia cutter mechanismCALCOMP INC·Filed 1993·Granted Nov 29, 1994·29 cites·9 claims
- 1968USD317783SThermal printerCALCOMP INC·Filed 1987·Granted Jun 25, 1991·12 cites·1 claims
- 2068US4853497AShielding techique for digitizersCALCOMP INC·Filed 1988·Granted Aug 1, 1989·37 cites·5 claims
- 2168US4794208AFrequency shifting digitizer for reducing AC fields interferenceCALCOMP INC·Filed 1988·Granted Dec 27, 1988·38 cites·15 claims
- 2266US5357062APressure sensing apparatus for digitizer pen tipCALCOMP INC·Filed 1993·Granted Oct 18, 1994·53 cites·29 claims
- 2365US5198623AMethod for use in a digitizer for determining pen tiltCALCOMP INC·Filed 1991·Granted Mar 30, 1993·43 cites·19 claims
- 2464US5710579ASensor system for printersCALCOMP INC·Filed 1995·Granted Jan 20, 1998·29 cites·3 claims
- 2564USD339374SPedestal-mounted case for a pen plotterCALCOMP INC·Filed 1991·Granted Sep 14, 1993·12 cites·1 claims
- 2663US5719608AConstant flow ink delivery systemCALCOMP INC·Filed 1995·Granted Feb 17, 1998·22 cites·12 claims
- 2763US5056042AMedia conductivity-based pulse controller for electrostatic printerCALCOMP INC·Filed 1990·Granted Oct 8, 1991·19 cites·20 claims
- 2862US5384688AThree-dimensional circuits for digitizer and pen-based computer system pen cursorsCALCOMP INC·Filed 1993·Granted Jan 24, 1995·24 cites·17 claims
- 2962US5126754AInk jet printing density controller with programmable angle of travel look-up tables for a plotterCALCOMP INC·Filed 1991·Granted Jun 30, 1992·21 cites·20 claims
- 3062US5124509ADigitizer with capacitive and inductive couplingCALCOMP INC·Filed 1991·Granted Jun 23, 1992·40 cites·36 claims
- 3161US5368291AMedia stripper mechanismCALCOMP INC·Filed 1993·Granted Nov 29, 1994·15 cites·2 claims
- 3261US5045645ADigitizer system with passive pointerCALCOMP INC·Filed 1990·Granted Sep 3, 1991·39 cites·28 claims
- 3361US4939318ADigitizer pen tilt correction employing wires near the data pointCALCOMP INC·Filed 1989·Granted Jul 3, 1990·30 cites·2 claims
- 3460US4966560ACoaxial connector plug using a center conductor sleeve and single point crimpingCALCOMP INC·Filed 1989·Granted Oct 30, 1990·31 cites·6 claims
- 3559US5854449AHigh accuracy digitizer systemCALCOMP INC·Filed 1995·Granted Dec 29, 1998·45 cites·10 claims
- 3659US5357061ADigitizer tablet having high permeability grid shieldCALCOMP INC·Filed 1992·Granted Oct 18, 1994·33 cites·33 claims
- 3759US5212888ADual function sensor for a pen plotterCALCOMP INC·Filed 1991·Granted May 25, 1993·22 cites·4 claims
- 3857US5721577ALarge capacity ink cartridgeCALCOMP INC·Filed 1995·Granted Feb 24, 1998·21 cites·12 claims
- 3957US4835347AShifting wire sequence digitizer systemCALCOMP INC·Filed 1988·Granted May 30, 1989·23 cites·22 claims
- 4056US4920363AMethod of manufacturing electrostatic printer headsCALCOMP INC·Filed 1989·Granted Apr 24, 1990·12 cites·2 claims
- 4154US4968882AAdjustable optical shaft encoder and calibration method for printers and plottersCALCOMP INC·Filed 1989·Granted Nov 6, 1990·9 cites·18 claims
- 4253US5436646ACam operated cutter for roll-fed pen plottersCALCOMP INC·Filed 1993·Granted Jul 25, 1995·21 cites·11 claims
- 4353US5408591AAutomatic calibration and servo control scheme for offsetting mechanical and electronic component variancesCALCOMP INC·Filed 1992·Granted Apr 18, 1995·19 cites·12 claims
- 4451US5268581ABar coding scheme for sensing media type and quantity on a rotating supply tubeCALCOMP INC·Filed 1992·Granted Dec 7, 1993·11 cites·27 claims
- 4551US5265210AMethod and apparatus for plotting pixels to approximate a straight line on a computer display device without substantial irregularitiesCALCOMP INC·Filed 1991·Granted Nov 23, 1993·18 cites·4 claims
- 4650US5458310AAdjustable and self-holding supply roll system for plotting devicesCALCOMP INC·Filed 1993·Granted Oct 17, 1995·9 cites·18 claims
- 4749US5214293ALatch status sensor sensing closed and unlatched positionCALCOMP INC·Filed 1992·Granted May 25, 1993·21 cites·20 claims
- 4848US5325109AMethod and apparatus for manipulation of pixel data in computer graphicsCALCOMP INC·Filed 1992·Granted Jun 28, 1994·14 cites·10 claims
- 4948US5287105AAutomatic tracking and scanning cursor for digitizersCALCOMP INC·Filed 1991·Granted Feb 15, 1994·21 cites·18 claims
- 5046US5384554AVoltage controlled oscillator circuit employing integrated circuit component ratiosCALCOMP INC·Filed 1993·Granted Jan 24, 1995·9 cites·9 claims
Showing the top 50 of 99 patent records by PatentIndex Score.
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