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In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7311116 | Gas regulation system and process for operating the gas regulation system A gas regulation system includes a manifold, a plurality of control modules in fluid communication with the manifold, and a power source. Each control module includes an actuatable valve that is in fluid communication with an associated gas storage device and in ele... | 12/25/2007 |
| 7305178 | Resistance heater A resistance heater 10 for a liquid system, in particular a fuel system of a diesel engine, in which a heating element 13 is connected to at least two contact rods 12a, 12b. Terminals are provided on the contact rods 12 | 12/04/2007 |
| 7285753 | Heating system for use in on-board kitchens in means of transport and a method for heating food on board means of transport, in particular aircraft For use on board a mobile means of transport (eg. aircraft, bus, ship), a heating system and method are described which lead to a reduction of peak demand in the on-board kitchen energy supply system relating to the integrated heating appliances for the warming or h... | 10/23/2007 |
| 5717817 | System for storing and handling waste materials A system which is particularly well suited for the storage and disposal of reclaimable oil and grease materials resulting from food preparation operations. The system utilizes a storage apparatus associated with a building. The apparatus preferably compri... | 02/10/1998 |
| 5703998 | Hot water tank assembly Hot water heaters are provided which contain improved temperature control devices and multiple resistance wire heating elements. The temperature control devices selectively deactivate at least one of the resistance wires to conserve electricity and preser... | 12/30/1997 |
| 5501268 | Method of energy load management using PCM for heating and cooling of buildings A method of energy load management for the heating and cooling of a building. The method involves utilizing a wallboard as a portion of the building, the wallboard containing about 5 to about 30 wt. % a phase change material such that melting of the phase... | 03/26/1996 |
| 4645908 | Residential heating, cooling and energy management system A residential HVAC system includes a heat pump having a compressor arranged to heat a domestic hot water vessel and to heat or cool a storage vessel which is connected to a heat exchanger within the residence. Temperature sensors are provided at critical ... | 02/24/1987 |
| 4570052 | Electrical thermal storage heat sink for space heater A process for creating a thermal storage heat sink includes providing a mass of a salt or a salt mixture held in a hollow container having a wall made of electrically conductive material and having an insulated central electrode extending into the salt ma... | 02/11/1986 |
| 4341262 | Energy storage system and method An energy storage system of increased conductivity for enhanced receipt, capture, storage, removal and release of energy is provided by dispersing finely divided filaments of highly conductive material throughout chemical energy storage media and causing ... | 07/27/1982 |
| 4006734 | Storage heater bricks Heat storage medium is produced by heating a mix of ferric oxide and an additive comprising a calcium compound to a temperature at which the additive reacts with the ferric oxide to improve its volumetric heat capacity, reducing the reaction product to pa... | 02/08/1977 |
