Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6949720 | Bottom electric heating element system for ovens A bottom electric heating element for an oven wherein the electric heating element is positioned in a recessed portion in the oven bottom and has at least one corrugated ribbon of conductive material partially embedded in an insulating base. A glass panel is positio... | 09/27/2005 |
| 6822201 | Laundry dryer A laundry drier has a heater control circuit for controlling the drive of a heater using one of a plurality of high voltages, using a switching circuit realized by a form C contact relay provided between a current-buffered microcomputer output and plurality of heate... | 11/23/2004 |
| 6775471 | Method and device for thermally treating objects The invention relates to a method and to a device for thermally treating objects. The aim of the invention is to facilitate a better control of the temperature profile of an object to be thermally treated. To this end, the invention provides a method and a device fo... | 08/10/2004 |
| 6683282 | Food merchandiser and temperature control system A display case or food merchandiser for displaying and serving hot food items or other products, has one or more long wave, infrared emitting heating elements. The voltage, and therefore the output, of the heating elements is controlled by a solid state p... | 01/27/2004 |
| 5842353 | Apparatus for heating or cooling drinks An liquid heating and cooling apparatus for heating or cooling liquid such as drinks is disclosed. The apparatus comprises a cup-shaped container for loading the liquid, a thermo device installed in the container for heating or cooling the liquid, and a b... | 12/01/1998 |
| 5325918 | Optimal joule heating of the subsurface A method for simultaneously heating the subsurface and imaging the effects of the heating. This method combines the use of tomographic imaging (electrical resistance tomography or ERT) to image electrical resistivity distribution underground, with joule h... | 07/05/1994 |
| 4825047 | Temperature-responsive controller for waterbed mattress heaters A controller for an electric resistance waterbed mattress heater supplied with electric current by an elongate power cord extending between the heater and a power service outlet. The controller includes a small diameter elongate cylindrical housing in whi... | 04/25/1989 |
| 4587405 | Device to control the cooking process in a steam pressure cooker A device for the control of the cooking process in a steam pressure cooker filled with water and the food to be cooked and heatable by means of a heating element controlled by a control circuit wherein the temperature of the pressure cooker is detected an... | 05/06/1986 |
| 4568821 | Remote water heater controller An apparatus and method for controlling a domestic hot water heater system in which the actual temperature of the water in the storage tank of the system is continuously measured and the measured water temperature is continuously displayed at a location r... | 02/04/1986 |
| 4549527 | Solid state temperature controller A temperature controller for a deep fat fryer including a temperature sensing circuit that determines the temperature of cooking oil in the deep fat fryer and which is connected to a temperature control circuit that controls the deep fat fryer heat source... | 10/29/1985 |
| 4489235 | Hydrocolloid conditioner apparatus A microprocessor controlled hydrocolloid conditioner comprising a frame, a bath tank separably supported by said frame for containing water heated to a pre-determined temperature useful in the conditioning of hydrocolloid material, heating means comprisin... | 12/18/1984 |
| 4278870 | Dental mirror warmer A dental mirror warmer to prevent fogging when the mirror is placed in a patient's mouth includes a housing with a cover having an opening. Below the opening is a heating well to receive the reflective end of the mirror. The well has a stainless steel wal... | 07/14/1981 |
| 4253013 | Electric heating device for warming the shaving head of an electric shaver The shaver warmer of this invention includes a heat transfer portion which almost closely fits the shaver head of the electric shaver to be warmed. A heat supply portion is directly connected to the heat transfer portion and a temperature control portion ... | 02/24/1981 |
| 4165359 | Autoclave aseptor A sterilizer or aseptor for contact lenses and the like is disclosed, which provides a capsule adapted to both carry and sterilize a single set of contact lenses. The sterilizer includes a well adapted to receive the capsule, and when the well is heated, ... | 08/21/1979 |
| 3946198 | Electrical control system for an exhaust gas sensor A system for controlling the application of heat energy to a ceramic exhaust gas sensor and for linearizing the output signal from the sensor is disclosed. The system compares, electrically, the resistance of a conductive heater winding against a fixed re... | 03/23/1976 |
