Assignee
HEHL KARL
132 granted patents·2 pending applications·2,008 citations·filing 1974–2010
Top patents by PatentIndex Score
134 records- 0189US4565116AHydraulic speed controls for die closing unit of injection molding machineHEHL KARL·Filed 1983·Granted Jan 21, 1986·59 cites·12 claims
- 0288US4473346AMechanism for the attachment of interchangeable molds in an injection molding machineHEHL KARL·Filed 1982·Granted Sep 25, 1984·54 cites·17 claims
- 0387US4380427ACompact hydraulic drive for die closing unit of injection molding machineHEHL KARL·Filed 1981·Granted Apr 19, 1983·53 cites·12 claims
- 0485US5052910AClamping unit for injection molding machineHEHL KARL·Filed 1989·Granted Oct 1, 1991·49 cites·18 claims
- 0584US4995801AInjection molding machine provided with a conveyor for delivering molding from the machineHEHL KARL·Filed 1989·Granted Feb 26, 1991·46 cites·17 claims
- 0683US8292610B2Device for manufacturing a three-dimensional objectHEHL KARL·Filed 2010·Granted Oct 23, 2012·10 cites·13 claims
- 0782US5129806AHydraulic system in an injection molding machineHEHL KARL·Filed 1991·Granted Jul 14, 1992·48 cites·6 claims
- 0882US4558916AMulti-pin plug connection system for electronic control unitHEHL KARL·Filed 1983·Granted Dec 17, 1985·40 cites·23 claims
- 0982US4544340AAttachment mechanism for interchangeable injection molding diesHEHL KARL·Filed 1984·Granted Oct 1, 1985·42 cites·20 claims
- 1081US4846664AHydraulic system for the mold clamping unit of a plastics injection molding machineHEHL KARL·Filed 1987·Granted Jul 11, 1989·44 cites·11 claims
- 1180US4386626AProportional valve for hydraulic systemsHEHL KARL·Filed 1980·Granted Jun 7, 1983·35 cites·11 claims
- 1278US3974857ADevice for monitoring and adjusting the temperature of multiple cooling circuitsHEHL KARL·Filed 1974·Granted Aug 17, 1976·31 cites·12 claims
- 1378US3973888ADie closing unit for injection molding machine with molding die having multiple transfer sectionsHEHL KARL·Filed 1975·Granted Aug 10, 1976·33 cites·16 claims
- 1478US3936262AMulti-orifice injector nozzle for injection molding machineHEHL KARL·Filed 1974·Granted Feb 3, 1976·32 cites·11 claims
- 1577US4737095AComponent changing apparatus serving a group of injection molding machinesHEHL KARL·Filed 1987·Granted Apr 12, 1988·37 cites·23 claims
- 1677US4094621ADie closing unit with oversize injection molding dieHEHL KARL·Filed 1977·Granted Jun 13, 1978·31 cites·6 claims
- 1776US4645446AInjection molding machine with self-connecting ejection deviceHEHL KARL·Filed 1985·Granted Feb 24, 1987·34 cites·10 claims
- 1876US4518338AInjection molding machine with mold changing and mold preconditioning deviceHEHL KARL·Filed 1983·Granted May 21, 1985·34 cites·23 claims
- 1975US4690436APipe couplingHEHL KARL·Filed 1985·Granted Sep 1, 1987·40 cites·10 claims
- 2074US4462783AMechanism for exchanging molding dies in an injection molding machineHEHL KARL·Filed 1983·Granted Jul 31, 1984·30 cites·17 claims
- 2173US4678572AVented cover assembly with filter insert for fluid reservoirHEHL KARL·Filed 1986·Granted Jul 7, 1987·34 cites·15 claims
- 2273US4021181ATie rod connection for die closing unit of injection molding machineHEHL KARL·Filed 1976·Granted May 3, 1977·25 cites·5 claims
- 2372US4629410ADual-hopper injection unit for injection molding machineHEHL KARL·Filed 1983·Granted Dec 16, 1986·29 cites·9 claims
- 2471US4671764ALatching device for injection molding diesHEHL KARL·Filed 1985·Granted Jun 9, 1987·32 cites·13 claims
- 2571US4315728AAdjustable slide shoe for die carrier plate of injection molding machineHEHL KARL·Filed 1980·Granted Feb 16, 1982·23 cites·12 claims
- 2671US3982856ABase and power unit for injection molding machineHEHL KARL·Filed 1975·Granted Sep 28, 1976·20 cites·12 claims
- 2770US7890880B2Method and device for interactive control of a machineHEHL KARL·Filed 2004·Granted Feb 15, 2011·8 cites·25 claims
- 2870US4669533ACooling and filtering unit for hydraulic drive fluidHEHL KARL·Filed 1985·Granted Jun 2, 1987·25 cites·17 claims
- 2969US4712991AHydraulic control system for injection unit of injection molding machineHEHL KARL·Filed 1985·Granted Dec 15, 1987·28 cites·17 claims
- 3067US4768559ACooling apparatus on a plastics injection molding machineHEHL KARL·Filed 1987·Granted Sep 6, 1988·22 cites·12 claims
- 3167US4196634AValve device for selectively connecting a pressure gauge to a plurality of pressure linesHEHL KARL·Filed 1978·Granted Apr 8, 1980·18 cites·16 claims
- 3266US8221107B2Electrically driven mold clamping unit on an injection molding machineHEHL KARL·Filed 2009·Granted Jul 17, 2012·2 cites·10 claims
- 3365US4823551AHydraulic control circuit for an injection molding with two loads driven by a pumpHEHL KARL·Filed 1985·Granted Apr 25, 1989·24 cites·7 claims
- 3465US4680002AInjection molding machineHEHL KARL·Filed 1986·Granted Jul 14, 1987·24 cites·19 claims
- 3565US4382241AValve adjustment unit for hydraulic proportional-response valveHEHL KARL·Filed 1980·Granted May 3, 1983·14 cites·18 claims
- 3665US4105385ACompact die closing unit for injection molding machinesHEHL KARL·Filed 1977·Granted Aug 8, 1978·25 cites·13 claims
- 3764US4863368AInjection molding machine for a selective linear or central charging of mold assembliesHEHL KARL·Filed 1988·Granted Sep 5, 1989·23 cites·11 claims
- 3864US4373890AMechanical safety cover interlock for injection molding machineHEHL KARL·Filed 1981·Granted Feb 15, 1983·9 cites·8 claims
- 3963US5007816AInjection molding machine having a displacement control for an injecting unit carrierHEHL KARL·Filed 1989·Granted Apr 16, 1991·22 cites·15 claims
- 4062US4909061ADrawing toolHEHL KARL·Filed 1989·Granted Mar 20, 1990·16 cites·12 claims
- 4161US5024593AApparatus for transporting moldings from an injection molding machineHEHL KARL·Filed 1989·Granted Jun 18, 1991·20 cites·18 claims
- 4261US4828478AInjection molding machine having replaceable, interlockable mold halvesHEHL KARL·Filed 1987·Granted May 9, 1989·21 cites·9 claims
- 4361US4598336AInsertion code arrangement for interchangeable circuit board modulesHEHL KARL·Filed 1983·Granted Jul 1, 1986·15 cites·14 claims
- 4461US4545753AInjection molding machine with self-connecting ejection deviceHEHL KARL·Filed 1983·Granted Oct 8, 1985·18 cites·7 claims
- 4560US4708622AInjection molding unitHEHL KARL·Filed 1986·Granted Nov 24, 1987·20 cites·21 claims
- 4660US4105390ADie closing unit with plate adjustment mechanism for injection molding machineHEHL KARL·Filed 1977·Granted Aug 8, 1978·17 cites·16 claims
- 4759US4025264ADie closing unit with retractable tie rodsHEHL KARL·Filed 1975·Granted May 24, 1977·17 cites·18 claims
- 4858US4976598AInjection molding machineHEHL KARL·Filed 1989·Granted Dec 11, 1990·18 cites·11 claims
- 4957US7261555B1Closing device in a plastic injection molding machineHEHL KARL·Filed 2003·Granted Aug 28, 2007·2 cites·13 claims
- 5057US7217383B2Mold closing device with mold height adjustment and method for actuation thereofHEHL KARL·Filed 2002·Granted May 15, 2007·2 cites·18 claims
Showing the top 50 of 134 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when HEHL KARL 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 →