Assignee
ZIMMERN BERNARD
US·25 granted patents·413 citations·filing 1974–1991
Top patents by PatentIndex Score
25 records- 0187US4968231AOil-free rotary compressor with injected water and dissolved borateZIMMERN BERNARD·Filed 1989·Granted Nov 6, 1990·43 cites·10 claims
- 0286US4903497AMethods and devices for cooling a motor of a refrigerating machine with liquid and economizer gasZIMMERN BERNARD·Filed 1988·Granted Feb 27, 1990·69 cites·23 claims
- 0381US4509341AEconomizer device for a refrigerating machine, a heat-pump or the likeZIMMERN BERNARD·Filed 1984·Granted Apr 9, 1985·43 cites·23 claims
- 0477US5195331AMethod of using a thermal expansion valve device, evaporator and flow control means assembly and refrigerating machineZIMMERN BERNARD·Filed 1991·Granted Mar 23, 1993·45 cites·5 claims
- 0575US4861246AInjected compressor with liquid switchZIMMERN BERNARD·Filed 1988·Granted Aug 29, 1989·24 cites·1 claims
- 0673US3945778ACompressors and expansion machines of the single worm typeZIMMERN BERNARD·Filed 1974·Granted Mar 23, 1976·21 cites·1 claims
- 0762US4534719AVolumetric screw-and-pinion machine and a method for using the sameZIMMERN BERNARD·Filed 1983·Granted Aug 13, 1985·17 cites·11 claims
- 0861US4470777AVolumetric machine with screw and pinion-wheelsZIMMERN BERNARD·Filed 1982·Granted Sep 11, 1984·16 cites·9 claims
- 0956US4579513APositive displacement screw machine with separation wall attached to slide valveZIMMERN BERNARD·Filed 1985·Granted Apr 1, 1986·14 cites·6 claims
- 1056US3932077ARotary interengaging worm and worm wheel with specific tooth shapeZIMMERN BERNARD·Filed 1974·Granted Jan 13, 1976·12 cites·7 claims
- 1154US4900239AMethod and a screw machine for processing fluid under high pressures, with liquid injection between a sealing portion and a support portion of the gate-rotorZIMMERN BERNARD·Filed 1988·Granted Feb 13, 1990·12 cites·8 claims
- 1253US4691533ARefrigeration system with a centrifugal economizerZIMMERN BERNARD·Filed 1986·Granted Sep 8, 1987·19 cites·1 claims
- 1352US4890989APositive displacement machine with a plastic gate pintonZIMMERN BERNARD·Filed 1988·Granted Jan 2, 1990·13 cites·10 claims
- 1445US5087182ACasing construction for screw compression/expansion machinesZIMMERN BERNARD·Filed 1990·Granted Feb 11, 1992·10 cites·2 claims
- 1544US4470781APositive displacement meshing screw machineZIMMERN BERNARD·Filed 1982·Granted Sep 11, 1984·8 cites·12 claims
- 1640US4492542AGlobal worm machine with seizure-preventing cellsZIMMERN BERNARD·Filed 1982·Granted Jan 8, 1985·6 cites·3 claims
- 1739US4589826AMethod of lubricating bearings of a machine handling liquefiable gasZIMMERN BERNARD·Filed 1985·Granted May 20, 1986·12 cites·17 claims
- 1839US4569640ADevice for high pressure compressionZIMMERN BERNARD·Filed 1983·Granted Feb 11, 1986·6 cites·8 claims
- 1938US5084965AProcess to cut hour glass screwsZIMMERN BERNARD·Filed 1991·Granted Feb 4, 1992·6 cites·4 claims
- 2036US5080568APositive displacement rotary machineZIMMERN BERNARD·Filed 1990·Granted Jan 14, 1992·5 cites·4 claims
- 2134US4553399AMethod of lubricating bearings of a refrigeration or the like compressorZIMMERN BERNARD·Filed 1984·Granted Nov 19, 1985·6 cites·11 claims
- 2234US4475877AGloboid worm machine with metal ring in bearing housingZIMMERN BERNARD·Filed 1983·Granted Oct 9, 1984·3 cites·8 claims
- 2330US4890461AHermetic or semi-hermetic refrigeration motor-compressor unitZIMMERN BERNARD·Filed 1988·Granted Jan 2, 1990·2 cites·8 claims
- 2430US4571166AControl slide for a screw volumetric machine and a machine equipped therewithZIMMERN BERNARD·Filed 1983·Granted Feb 18, 1986·0 cites·2 claims
- 2528US4570451APressure-ratio threshold sensor and a machine processing a liquefiable gas and equipped with such a sensorZIMMERN BERNARD·Filed 1984·Granted Feb 18, 1986·1 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when ZIMMERN BERNARD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →