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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →