Inventor · disambiguated record
Charles W. Spengler
Also filed as: SPENGLER CHARLES · SPENGLER CHARLES W · SPENGLER CHARLES WM
13 granted patents·1 pending application·378 citations·filing 1984–2017
93Inventor score
Top patents by PatentIndex Score
14 records- 0195US4528941AFree-standing environmental chambers supported by plenumSPENGLER CHARLES W·Filed 1984·Granted Jul 16, 1985·77 cites·14 claims
- 0279US5645480AClean air facilityFiled 1995·Granted Jul 8, 1997·54 cites·9 claims
- 0379US4804392AClean air facilitySPENGLER CHARLES W·Filed 1987·Granted Feb 14, 1989·79 cites·18 claims
- 0476US6602128B1Clean air room with a blower including a HEPA filter and ductsFiled 2002·Granted Aug 5, 2003·28 cites·18 claims
- 0569US10354141B2Role-based perception filterMOTOROLA SOLUTIONS INC·Filed 2017·Granted Jul 16, 2019·2 cites·18 claims
- 0669US7462213B2Method of minimizing cross contamination between clean air rooms in a common enclosureSPENGLER CHARLES W·Filed 2005·Granted Dec 9, 2008·4 cites·17 claims
- 0769US4917046AAerosol testing method and chamber for experimental animalsSPENGLER CHARLES W·Filed 1988·Granted Apr 17, 1990·24 cites·8 claims
- 0868US4732592APortable clean air facilitySPENGLER CHARLES W·Filed 1986·Granted Mar 22, 1988·30 cites·7 claims
- 0962US4900342ABlower-filter assemblySPENGLER CHARLES W·Filed 1988·Granted Feb 13, 1990·20 cites·13 claims
- 1057US4781146AAerosol testing chamber for experimental animalsSPENGLER CHARLES W·Filed 1986·Granted Nov 1, 1988·17 cites·24 claims
- 1156US4622771ACommunication display deviceSPENGLER CHARLES W·Filed 1985·Granted Nov 18, 1986·17 cites·15 claims
- 1253US5688297APortable clean air facilityFiled 1996·Granted Nov 18, 1997·22 cites·5 claims
- 1332US2018350344A1System, device, and method for an electronic digital assistant having a context driven natural language vocabularyMOTOROLA SOLUTIONS INC·Filed 2017·Application pending·0 cites
- 1426US6347490B1Docking system for a biobubble clean roomBIOBUBBLE INC·Filed 1999·Granted Feb 19, 2002·4 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →