Inventor · disambiguated record
Frederick M. Shofner
Also filed as: SHOFNER FREDERICK M · SHOFNER II FREDERICK M · SHOFNER II FREDERICK MICHAEL
52 granted patents·3 pending applications·1,083 citations·filing 1975–2019
99Inventor score
Files withZELLWEGER USTER INC19SHOFNER ENGINEERING ASSOCIATES12PPM INC8OWENS CORNING FIBERGLASS CORP3PREMIER POLYTRONICS LTD3
Top patents by PatentIndex Score
55 records- 0194US5367747ANeedle-based apparatus for individualizing fibers and other textile entities for testing purposesZELLWEGER USTER INC·Filed 1992·Granted Nov 29, 1994·19 cites·13 claims
- 0293US4512060AApparatus and methods for aeromechanical and electrodynamic release and separation of foreign matter from fiberPPM INC·Filed 1983·Granted Apr 23, 1985·46 cites·14 claims
- 0392US4473296ASystem and method and apparatus for a continuous aerosol monitor (CAM) using electro-optical weighing for general aerosolsPPM INC·Filed 1982·Granted Sep 25, 1984·79 cites·39 claims
- 0491US5533145AContinuous two dimensional monitoring of thin webs of textile materialsZELLWEGER USTER INC·Filed 1994·Granted Jul 2, 1996·100 cites·17 claims
- 0589US5483844ANeedle-based apparatus for individualizing single fibers and other textile entities for testing purposesZELLWEGER USTER INC·Filed 1994·Granted Jan 16, 1996·13 cites·11 claims
- 0689US4885473AMethod and apparatus for detecting particles in a fluid using a scanning beamSHOFNER ENGINEERING ASSOCIATES·Filed 1988·Granted Dec 5, 1989·75 cites·19 claims
- 0789US4249244AElectro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devicesPPM INC·Filed 1978·Granted Feb 3, 1981·51 cites·74 claims
- 0885US4686744AMethods for aeromechanical and electrodynamic release and separation of foreign matter from fiberPPM INC·Filed 1986·Granted Aug 18, 1987·28 cites·31 claims
- 0983US4631781AConditioned gas flow methods for processing and cleaning fiber, including aeromechanical and electrodynamic release and separationPPM INC·Filed 1986·Granted Dec 30, 1986·25 cites·13 claims
- 1083US4017186AElectro-optical method and system for in situ measurements of particulate mass densityENVIRONMENTAL SYSTEMS CORP·Filed 1975·Granted Apr 12, 1977·35 cites·21 claims
- 1182USD282767SFilter unitPPM INC·Filed 1982·Granted Feb 25, 1986·17 cites·1 claims
- 1281US4881957AAir filtration units and methods employing dust as filtration media and air flow rate as a directly controlled parameterPPM INC·Filed 1983·Granted Nov 21, 1989·38 cites·12 claims
- 1380US7142693B2Method of grading sampleSHOFNER ENGINEERING ASSOCIATES·Filed 2002·Granted Nov 28, 2006·20 cites·14 claims
- 1479US6735327B1Color and trash measurements by image analysisSHOFNER ENGINEERING ASSOCIATES·Filed 2000·Granted May 11, 2004·16 cites·21 claims
- 1578US6532798B1Micronaire, maturity and fineness measurements via continuous compression air flow permeability measurementsSHOFNER ENGINEERING ASSOCIATES·Filed 2000·Granted Mar 18, 2003·11 cites·8 claims
- 1678US6397437B1Ultra rapid conditioning of cotton fiber for testing and processingSHOFNER ENGINEERING ASSOCIATES·Filed 2000·Granted Jun 4, 2002·11 cites·7 claims
- 1777US5270787AElectro-optical methods and apparatus for high speed, multivariate measurement of individual entities in fiber or other samplesZELLWEGER USTER INC·Filed 1990·Granted Dec 14, 1993·46 cites·20 claims
- 1875US5544090ARemoval of undesirable entities in thin webs of textile materialsZELLWEGER USTER INC·Filed 1994·Granted Aug 6, 1996·29 cites·9 claims
- 1974US6598267B2Fiber length and strength measurement systemSHOFNER ASSOCIATES INC·Filed 2002·Granted Jul 29, 2003·12 cites·29 claims
- 2072US7675615B1Image-based fiber length measurements from tapered beardsSHOFNER ENGINEERING ASSOCIATES·Filed 2007·Granted Mar 9, 2010·2 cites·5 claims
- 2171US4343637AMethod and apparatus for monitoring the diameter of fibersOWENS CORNING FIBERGLASS CORP·Filed 1980·Granted Aug 10, 1982·22 cites·16 claims
- 2270US5361450ADirect control of fiber testing or processing performance parameters by application of controlled, conditioned gas flowsZELLWEGER USTER INC·Filed 1992·Granted Nov 8, 1994·27 cites·30 claims
- 2368US10233874B2Fuel heating apparatus and methodsCT ENERGY HOLDINGS LLC·Filed 2017·Granted Mar 19, 2019·1 cites·22 claims
- 2468US5537868ADirect control of fiber testing performance parameters by application of controlled conditioned gas flowsZELLWEGER USTER INC·Filed 1994·Granted Jul 23, 1996·26 cites·21 claims
- 2566US5910598AModular process zone and personnel zone environmental control with dedicated air jet cleaningSHOFNER ENGINEERING ASSOCIATES·Filed 1995·Granted Jun 8, 1999·19 cites·6 claims
- 2665US5321496AApparatus for monitoring trash in a fiber sampleZELLWEGER USTER INC·Filed 1991·Granted Jun 14, 1994·28 cites·15 claims
- 2765US5167150AApparatus and methods for testing tension-elongation or cross-sectional properties of single fibers and multiple fiber bundlesZELLWEGER USTER INC·Filed 1991·Granted Dec 1, 1992·29 cites·10 claims
- 2863US5383135AAcquisition, measurement and control of thin webs on in-process textile materialsZELLWEGER USTER INC·Filed 1992·Granted Jan 17, 1995·22 cites·11 claims
- 2962US5890264AAeromechanical individualizerPREMIER POLYTRONICS LTD·Filed 1997·Granted Apr 6, 1999·14 cites·3 claims
- 3062US5560194AMethod for optimally controlling fiber processing machinesZELLWEGER USTER INC·Filed 1994·Granted Oct 1, 1996·28 cites·16 claims
- 3161US7345756B2Image-based fiber length measurements from tapered beardsSHOFNER ENGINEERING ASSOCIATES·Filed 2004·Granted Mar 18, 2008·3 cites·13 claims
- 3261US6698274B2Micronaire, maturity and fineness measurements via continuous compression air flow permeability measurementsSHOFNER ENGINEERING ASSOCIATES·Filed 2003·Granted Mar 2, 2004·2 cites·7 claims
- 3359US5539515AApparatus and methods for measurement and classification of trash in fiber samplesZELLWEGER USTER INC·Filed 1994·Granted Jul 23, 1996·22 cites·1 claims
- 3458US11725613B2Fuel heating apparatus and methodsCT ENERGY HOLDINGS LLC·Filed 2019·Granted Aug 15, 2023·0 cites·17 claims
- 3558US6604259B2Ultra rapid conditioning of cotton fiber for testing and processingSHOFNER ENGINEERING ASSOCIATES·Filed 2002·Granted Aug 12, 2003·1 cites·38 claims
- 3656US8893488B2Compressed air engine and power train systemSHOFNER II FREDERICK MICHAEL·Filed 2013·Granted Nov 25, 2014·1 cites·18 claims
- 3756US5410401AMethods and apparatus for mechanically and electronically correcting presentation of entities in a fluid flowZELLWEGER USTER INC·Filed 1992·Granted Apr 25, 1995·17 cites·19 claims
- 3854US8347616B2Compressed air engine and power train systemSHOFNER II FREDERICK MICHAEL·Filed 2009·Granted Jan 8, 2013·2 cites·20 claims
- 3954US6854460B1Controlled deliveries and depositions of pharmaceutical and other aerosolized massesSHOFNER ENGINEERING ASSOCIATES·Filed 2000·Granted Feb 15, 2005·21 cites·20 claims
- 4054US5676177AMethod for optimally processing materials in a machineSHOFNER ENGINEERING ASSOCIATES·Filed 1995·Granted Oct 14, 1997·12 cites·18 claims
- 4153US5491876ANeedle-based apparatus for individualizing single fibers and other textile entities for testing puposesZELLWEGER USTER INC·Filed 1994·Granted Feb 20, 1996·13 cites·6 claims
- 4253US5430301AApparatus and methods for measurement and classification of generalized neplike entities in fiber samplesZELLWEGER USTER INC·Filed 1993·Granted Jul 4, 1995·17 cites·12 claims
- 4351US5469253AApparatus and method for testing multiple characteristics of single textile sample with automatic feedZELLWEGER USTER INC·Filed 1992·Granted Nov 21, 1995·17 cites·14 claims
- 4451US4389574AMethod and apparatus for detecting a break in a plurality of glass fibersOWENS CORNING FIBERGLASS CORP·Filed 1981·Granted Jun 21, 1983·13 cites·14 claims
- 4546US6029316AEnvironmental conditioning methods and apparatus for improved materials testing: rapidcon and rapidairPREMIER POLYTRONICS LTD·Filed 1998·Granted Feb 29, 2000·9 cites·34 claims
- 4644US5138879AMethod for producing multiple fiber dataZELLWEGER USTER INC·Filed 1991·Granted Aug 18, 1992·11 cites·8 claims
- 4743US4319901AElectro-optic fiber monitorOWENS CORNING FIBERGLASS CORP·Filed 1980·Granted Mar 16, 1982·8 cites·5 claims
- 4842US2003016357A1Measurement of aerosol mass concentration and mass delivery rateFiled 2001·Application pending·0 cites
- 4938US4396286AElectro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devicesPPM INC·Filed 1980·Granted Aug 2, 1983·6 cites·11 claims
- 5037US5394480ATopological map makerZELLWEGER USTER INC·Filed 1991·Granted Feb 28, 1995·7 cites·15 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →