Inventor · disambiguated record
Paul L. Ruben
Also filed as: RUBEN PAUL · RUBEN PAUL L · RUBEN PAUL LEWIS
20 granted patents·530 citations·filing 1974–1999
95Inventor score
Files withEASTMAN KODAK CO16AMAREL PRECISION INSTR1MICROCOR INC1PRESTANDREA ANTHONY1REPUBLIC LENS CO INC1
Top patents by PatentIndex Score
20 records- 0193US5642734AMethod and apparatus for noninvasively determining hematocritMICROCOR INC·Filed 1996·Granted Jul 1, 1997·210 cites·85 claims
- 0293US4949117ACameraEASTMAN KODAK CO·Filed 1988·Granted Aug 14, 1990·48 cites·10 claims
- 0390US5241337AReal image viewfinder requiring no field lensEASTMAN KODAK CO·Filed 1991·Granted Aug 31, 1993·92 cites·21 claims
- 0482US4821053APhotographic flash deviceEASTMAN KODAK CO·Filed 1988·Granted Apr 11, 1989·19 cites·6 claims
- 0580US3944337AThree element objective lens with ellipsoidal, hyperbolic, and parabolic surfacesEASTMAN KODAK CO·Filed 1974·Granted Mar 16, 1976·33 cites·6 claims
- 0668US5475460APhotographic play set having improved lightingEASTMAN KODAK CO·Filed 1994·Granted Dec 12, 1995·12 cites·25 claims
- 0759US3972592AZoom projection lensEASTMAN KODAK CO·Filed 1974·Granted Aug 3, 1976·17 cites·1 claims
- 0857US5130845AReal image viewfinderEASTMAN KODAK CO·Filed 1990·Granted Jul 14, 1992·19 cites·6 claims
- 0949US5500770AMacrolens system for emission microscopyAMAREL PRECISION INSTR·Filed 1994·Granted Mar 19, 1996·17 cites·10 claims
- 1044US5461512AZoom camera lens having three moving groupsEASTMAN KODAK CO·Filed 1993·Granted Oct 24, 1995·10 cites·13 claims
- 1144US5335033ALensless camera viewfinderEASTMAN KODAK CO·Filed 1992·Granted Aug 2, 1994·4 cites·21 claims
- 1243US5581409AImaging system to combine disparate fields of viewREPUBLIC LENS CO INC·Filed 1994·Granted Dec 3, 1996·10 cites·15 claims
- 1340US5537254ACompact small format zoom lensEASTMAN KODAK CO·Filed 1993·Granted Jul 16, 1996·8 cites·11 claims
- 1440US5331360AAdaptor for overhead projectorEASTMAN KODAK CO·Filed 1993·Granted Jul 19, 1994·3 cites·11 claims
- 1538US5182592AReal image zoom viewfinderEASTMAN KODAK CO·Filed 1991·Granted Jan 26, 1993·7 cites·15 claims
- 1635US5300977AZoom viewfinder with fixed size moving windowEASTMAN KODAK CO·Filed 1992·Granted Apr 5, 1994·5 cites·7 claims
- 1733US5335034AZoom viewfinder with non-rectangular windowEASTMAN KODAK CO·Filed 1992·Granted Aug 2, 1994·4 cites·10 claims
- 1830US5915136AReal-image viewfinder with stationary and movable real image planesEASTMAN KODAK CO·Filed 1992·Granted Jun 22, 1999·0 cites·5 claims
- 1927US5155517AOptical system with improved field maskEASTMAN KODAK CO·Filed 1991·Granted Oct 13, 1992·5 cites·8 claims
- 2022US6254233B1Wide-angle view eyeglassesPRESTANDREA ANTHONY·Filed 1999·Granted Jul 3, 2001·7 cites·18 claims
Join the waitlist — get patent alerts
Get an alert when Paul L. Ruben files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →