| Patent | Date |
|---|
Control system, method of operating a heating apparatus and controlled heating apparatus
Grant 5,235,159 - Kornrumpf , et al. August 10, 1 | 1993-08-10 |
Piezoelectric ceramic switching devices and systems and method of making the same
Grant RE33,691 - Harnden, Jr. , et al. September 17, 1 | 1991-09-17 |
Method for initially polarizing and centering a piezoelectric ceramic switching device
Grant RE33,618 - Harnden, Jr. , et al. June 25, 1 | 1991-06-25 |
Method for (prepolarizing and centering) operating a piezoceramic power switching device
Grant RE33,587 - Harnden, Jr. , et al. May 14, 1 | 1991-05-14 |
Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture
Grant RE33,577 - Harnden, Jr. , et al. April 23, 1 | 1991-04-23 |
Piezoelectric ceramic switching devices and systems and methods of making the same
Grant RE33,568 - Harnden, Jr. , et al. April 9, 1 | 1991-04-09 |
Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus
Grant 4,967,568 - Harnden, Jr. , et al. November 6, 1 | 1990-11-06 |
Piezoelectic relay module to be utilized in an appliance or the like
Grant 4,819,126 - Kornrumpf , et al. April 4, 1 | 1989-04-04 |
Electronic starting circuit for an alternating current motor
Grant 4,764,714 - Alley , et al. August 16, 1 | 1988-08-16 |
Piezoelectric relays in sealed enclosures
Grant 4,755,706 - Harnden, Jr. , et al. July 5, 1 | 1988-07-05 |
Piezoelectric switch
Grant 4,742,263 - Harnden, Jr. , et al. May 3, 1 | 1988-05-03 |
Piezoelectric switch
Grant 4,697,118 - Harnden, Jr. , et al. September 29, 1 | 1987-09-29 |
Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture
Grant 4,689,517 - Harnden, Jr. , et al. August 25, 1 | 1987-08-25 |
Piezoelectric ceramic switching devices and systems and methods of making the same
Grant 4,678,957 - Harnden, Jr. , et al. July 7, 1 | 1987-07-07 |
Piezoelectric ceramic switching devices and systems and method of making the same
Grant 4,670,682 - Harnden, Jr. , et al. June 2, 1 | 1987-06-02 |
Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices
Grant 4,626,698 - Harnden, Jr. , et al. December 2, 1 | 1986-12-02 |
Current-shunt system for known conductors
Grant 4,584,525 - Harnden, Jr. , et al. April 22, 1 | 1986-04-22 |
Magnetoelastic force/pressure sensor
Grant 4,561,314 - Alley , et al. December 31, 1 | 1985-12-31 |
LCD Hook-on digital ammeter
Grant 4,559,496 - Harnden, Jr. , et al. December 17, 1 | 1985-12-17 |
Radiant-energy heating and/or cooking apparatus with honeycomb coverplate
Grant 4,489,234 - Harnden, Jr. , et al. December 18, 1 | 1984-12-18 |
LDC Hook-on digital ammeter
Grant 4,471,300 - Harnden, Jr. , et al. September 11, 1 | 1984-09-11 |
Low cost volt/ampere meter with liquid crystal display
Grant 4,438,396 - Harnden, Jr. , et al. March 20, 1 | 1984-03-20 |
Diode assisted relay contactor
Grant 4,360,847 - Bloomer , et al. November 23, 1 | 1982-11-23 |
Electrical device termination high temperature indicator
Grant 4,310,837 - Kornrumpf , et al. January 12, 1 | 1982-01-12 |
Power module with isolated substrates cooled by integral heat-energy-removal means
Grant 4,145,708 - Ferro , et al. March 20, 1 | 1979-03-20 |
Inverter power supply
Grant 4,070,701 - Harnden, Jr. , et al. January 24, 1 | 1978-01-24 |
Thermally responsive metal oxide varistor transient suppression circuit
Grant 4,068,281 - Harnden, Jr. January 10, 1 | 1978-01-10 |
Magnetic circuit and method of making
Grant 4,060,783 - Harnden, Jr. November 29, 1 | 1977-11-29 |
Incandescent lamp series string having protection against voltage surges
Grant 3,912,966 - Harnden, Jr. October 14, 1 | 1975-10-14 |
Semiconductor device with housing of varistor material
Grant 3,896,480 - Harnden, Jr. July 22, 1 | 1975-07-22 |
Opto-electronic Object Detector Using Semiconductor Light Source
Grant 3,862,415 - Harnden, Jr. , et al. January 21, 1 | 1975-01-21 |
Molded Opto-electronic Transducer
Grant 3,842,263 - Kornrumpf , et al. October 15, 1 | 1974-10-15 |
Optical Link For Illuminated Traveling Message Display Sign System
Grant 3,838,412 - Jones , et al. September 24, 1 | 1974-09-24 |
Opto-electronic Transducers For Object Detection
Grant 3,819,938 - Kornrumpf , et al. June 25, 1 | 1974-06-25 |
Solid State Induction Cooking Appliance
Grant 3,814,888 - Bowers , et al. June 4, 1 | 1974-06-04 |
Induction Cooking Appliance Including Temperature Sensing Of Inductively Heated Cooking Vessel
Grant 3,786,220 - Harnden, Jr January 15, 1 | 1974-01-15 |
Solid State Induction Cooking Systems For Ranges And Surface Cooking Units
Grant 3,786,219 - Kornrumpf , et al. January 15, 1 | 1974-01-15 |
Metallic Foil Induction Cooking
Grant 3,786,222 - Harnden, Jr. , et al. January 15, 1 | 1974-01-15 |
Solid State Induction Cooking Appliances And Circuits
Grant 3,781,503 - Harnden, Jr. , et al. December 25, 1 | 1973-12-25 |
Induction Cooking Appliance Including Temperature Sensing Of Inductively Heated Cooking Vessel By Radiation Detection Means
Grant 3,781,504 - Harnden, Jr. December 25, 1 | 1973-12-25 |
Reliable Solid State Induction Cooking Appliance With Control Logic
Grant 3,770,928 - Kornrumf , et al. November 6, 1 | 1973-11-06 |
Potted Metal Oxide Varistor
Grant 3,771,091 - Harnden, Jr. November 6, 1 | 1973-11-06 |
Metal Oxide Varistor With Laterally Spaced Electrodes
Grant 3,768,058 - Harnden, Jr. October 23, 1 | 1973-10-23 |
Small Electrical Apparatus Powered By Induction Cooking Appliances
Grant 3,761,668 - Harnden, Jr. , et al. September 25, 1 | 1973-09-25 |
Inductively Heatable Utensils Or Vessels For Heating, Serving And Storing Food
Grant 3,745,290 - Harnden, Jr. , et al. July 10, 1 | 1973-07-10 |
Semiconductor Device-metal Oxide Varistor-heat Sink Assembly
Grant 3,745,505 - Turnbull , et al. July 10, 1 | 1973-07-10 |
Hybrid Circuit Arrangement With Metal Oxide Varistor Shunt
Grant 3,743,897 - Harnden, Jr. July 3, 1 | 1973-07-03 |
Protective Pads For Electrical Devices
Grant 3,743,996 - Harnden, Jr. July 3, 1 | 1973-07-03 |
Protective Electrical Feed-through Assemblies For Enclosures For Electrical Devices
Grant 3,742,420 - Harnden, Jr. June 26, 1 | 1973-06-26 |
Induction Cooking Appliance Including Temperature Sensing Of Food In Inductively Heated Vessel With Immersion-type Temperature Sensing Means
Grant 3,742,175 - Harnden, Jr. June 26, 1 | 1973-06-26 |
Induction Cooking Appliance Including Cooking Vessel Having Means For Wireless Transmission Of Temperature Data
Grant 3,742,178 - Harnden, Jr. June 26, 1 | 1973-06-26 |
Induction Cooking Appliance Including Cooking Vessel Having Means For Transmission Of Temperature Data By Light Pulses
Grant 3,742,174 - Harnden, Jr. June 26, 1 | 1973-06-26 |
Induction Cooking Appliance Including Wireless Transmission Of Temperature Data
Grant 3,742,179 - Harnden, Jr. June 26, 1 | 1973-06-26 |
Protective Connector Devices
Grant 3,740,701 - Harnden, Jr. June 19, 1 | 1973-06-19 |
Time-share Transmitter
Grant 3,727,185 - Jones , et al. April 10, 1 | 1973-04-10 |
Induction Cooking Appliance Including Temperature Sensing Of Inductively Heated Cooking Vessel By "modulated" Light
Grant 3,719,789 - Harnden, Jr. March 6, 1 | 1973-03-06 |
Induction Cooking/warming Appliance Including Vessel Supporting Means Having An Undulant Surface And Temperature Sensing Means Associated With Said Surface
Grant 3,715,550 - Harnden, Jr. , et al. February 6, 1 | 1973-02-06 |
Surge Suppression Transmission Means
Grant 3,711,794 - Tasca , et al. January 16, 1 | 1973-01-16 |
Switch With Surge Protection
Grant 3,711,668 - Harnden, Jr. January 16, 1 | 1973-01-16 |
Electromagnetic Device Having A Metal Oxide Varistor Core
Grant 3,710,187 - Harnden, Jr. January 9, 1 | 1973-01-09 |
Induction Cooking Appliance With Multicylinder Power Circuits
Grant 3,697,717 - Kornrumpf , et al. October 10, 1 | 1972-10-10 |
Flexible Electronic Integrated Circuit Camera Control Assembly
Grant 3,670,639 - Harnden, Jr. June 20, 1 | 1972-06-20 |
Construction Of Disposable Photoflash Lamp Array
Grant 3,598,985 - Harnden, Jr. , et al. August 10, 1 | 1971-08-10 |
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