Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7305839 | Thermal transfer device and system and method incorporating same A thermal transfer device having a first substrate layer, a second substrate layer and first and second electrodes disposed between the first substrate layer and the second substrate layer. The thermal transfer device also includes a release layer disposed between t... | 12/11/2007 |
| 7260939 | Thermal transfer device and system and method incorporating same A method of manufacturing a thermal transfer device including providing first and second thermally conductive substrates that are substantially atomically flat, providing a patterned electrical barrier having a plurality of closed shapes on the first thermally condu... | 08/28/2007 |
| 7009329 | Thermally optimized cold cathode heater Systems and methods for providing a thermally optimized cold cathode heater in which a heater wire is disposed in a plurality of turns are shown. Turns of the plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding... | 03/07/2006 |
| 6906449 | Hybrid thermionic energy converter and method The present invention embodies a solid state thermionic energy converter and is directed to a method and apparatus for conversion of thermal energy to electrical energy, and electrical energy to refrigeration. The present invention maintains a thermal separation bet... | 06/14/2005 |
| 6326541 | Solar/thermal radiation cell device A solar/thermal radiation cell device comprising at least two parallel metal or semiconductor plates of equal or unequal dimensions separated by an air or an insulated gap and based on an insulator slab for producing electricity from solar energy. Multipl... | 12/04/2001 |
| 5314651 | Fine-grain pyroelectric detector material and method An improved pyroelectric material comprises a polycrystalline material doped with at least one donor element such that the polycrystalline material has a grain size less than 10 μm (or 5 μm) and a Figure of Merit greater than 90 nC/(cm2.K). I... | 05/24/1994 |
| 5028835 | Thermionic energy production A thermionic energy converter comprises an emitter, a transparent collector support generally parallel to an emitting surface of the emitter, a conductive film collector from about 10 to about 3,000 Angstroms in thickness covering a support surface of the... | 07/02/1991 |
| 3985685 | Pyroelectric materials and devices A novel pyroelectric material is provided by doping lead germanate with barium to provide the composition Pb5-x Bax Ge3 O11 0 | 10/12/1976 |
