Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7238320 | Device for oxygenating blood in an extracorporeal circuit A device for oxygenating blood in an extracorporeal circuit includes a first structure suitable to delimit a portion of space-containing capillaries made of microporous membrane. The capillaries convey oxygen and are wet externally by blood flowing through a portion... | 07/03/2007 |
| 7137619 | Heating tower apparatus and method with wind direction adaptation A heating tower apparatus for heating a liquid having more than one inlet and more than one outlet. Each of the more than one inlet and more than one outlet is selectively openable and closable. The heating tower apparatus also includes a liquid distribution assembl... | 11/21/2006 |
| 6613281 | Integrated heat exchanger/reservoir An integrated heat exchanger/reservoir for use alone or in combination in an extracorporeal blood circuit. The reservoir includes a hard outer shell topped by a lid with a venous blood inlet. Blood from the inlet enters an elongated annular heat exchange ... | 09/02/2003 |
| 6564864 | Method of operating low profile heat exchange method with reduced water consumption A method of exchanging heat is disclosed. Process fluid is passed through a dry indirect contact heat exchange section while a main air stream is also passed through that section. The process fluid is passed through a second indirect contact heat exchange... | 05/20/2003 |
| 6288252 | Milkfat treatment The color level in milkfat is reduced by heating milkfat to 200 degrees C. and 300 degrees C. for a period of less than tern minutes, preferably using an intimate thermal contact between the heater and the milkfat. The heater may in one embodiment have a ... | 09/11/2001 |
| 6213200 | Low profile heat exchange system and method with reduced water consumption A system and method of exchanging heat are disclosed. Three heat exchange sections are used: a dry indirect contact heat exchange section, a second indirect contact heat exchange section that is operable in either a wet or dry mode, and a direct contact h... | 04/10/2001 |
| 5961784 | Method for reducing the consumption of fresh water in a paper mill by means of a cooling tower A method for reducing the consumption of fresh water and energy in a paper mill in which fresh water is passed into the paper mill for various needs, and a cooling tower is utilized for cooling water heated in the papermaking process. All fresh waters or ... | 10/05/1999 |
| 5759857 | Leak detection using chemical markers Leakage in a heat exchanger between two liquids which are in indirect heat exchange relationship is detected by marking one of the two liquids with a colorless chemical marker and detecting it in the second liquid by extraction and conversion to a colored... | 06/02/1998 |
| 5724828 | Combination direct and indirect closed circuit evaporative heat exchanger with blow-through fan A heat exchange apparatus which can be used as an evaporative condenser, fluid cooler or wet-air cooler, is provided with a direct evaporative heat exchange section overlying an indirect evaporative heat exchange section. An air entry zone common to both ... | 03/10/1998 |
| 5413742 | Post-mix beverage apparatus including heat exchanger for non-carbonated water A post-mix beverage preparation and dispensing unit includes a carbonator tank coupled to a feed water branching circuit. The branching circuit selectively feeds fresh water from a pressurized fresh water source to the storage tank where the water is mixe... | 05/09/1995 |
| 5001066 | Method for carrying out sparged reaction Process for carrying out a sparged reaction, including providing one or a plurality of vertically-disposed reaction tubes, introducing a sparging gas under pressure into the bottom of the tube, separating and withdrawing the sparging gas from the top of t... | 03/19/1991 |
| 4806171 | Apparatus and method for removing minute particles from a substrate Apparatus for removing small particles from a substrate comprising a source of fluid carbon dioxide, a first means for expanding a portion of the fluid carbon dioxide into a first mixture containing gaseous carbon dioxide and fine droplets of liquid carbo... | 02/21/1989 |
| 4708827 | Method of and apparatus for making and dispensing carbonated water with a double diaphragm pneumatic water pump A method of and apparatus for making and dispensing carbonated water with a double diaphragm continuous delivery pneumatic liquid pump has a water pressure regulator on a water inlet line to the pump, a water fill line to a carbonator, a propellent exhaus... | 11/24/1987 |
| 4623494 | Atmospheric cooling tower with reduced vapor cloud A wet atmospheric cooling tower has a vertical chimney defining an air path from air inlet openings at the lower end thereof for admitting atmospheric air to an exhaust opening at the upper end thereof, a stationary packing extending circumferentially wit... | 11/18/1986 |
| 4566290 | Capillary fin media An evaporative cooler is disclosed which incorporates a media having a plurality of generally plate-like structures. The plates include a plurality of fins having slot-like depressions dimensioned thin enough to exhibit capillarity, yet thick enough to ex... | 01/28/1986 |
| 4461733 | Capillary fin media An evaporative cooler is disclosed which incorporates a media having a plurality of generally plate-like structures. The plates include a plurality of fins having slot-like depressions dimensioned thin enough to exhibit capillarity, yet thick enough to ex... | 07/24/1984 |
| 4445023 | Electric thermal storage heater system for heating fluids A thermal storage heater system for heating fluids includes a storage tank for accumulating and storing energy in the form of a quantity liquid heated to a high temperature by an electric immersion heating element in the tank. A source of a first fluid to... | 04/24/1984 |
| 4315873 | Cooling equipment There is disclosed cooling equipment wherein air is caused to pass through a wet cooling tower section and thus precooled prior to passage across the tube bundle of a dry cooling tower section through which a medium to be cooled is circulated, and then ei... | 02/16/1982 |
| 4012473 | Nebulizer-humidifier A convertible function water vapor generating device is provided for use with medical oxygen delivery systems for creating a nebulizing mist suspended in the oxygen flow and for creating a bubble humidified oxygen flow. An oxygen handling component may be... | 03/15/1977 |
| 3998613 | Apparatus for removing sulfur dioxide and particulate matter from flue gases An apparatus for the removal of sulfur dioxide and particulate matter from flue gases wherein a pump extracts hot flue gases from a furnace and discharges such gases, and the particulates entrained therein, into one end of an extractor comprising a horizo... | 12/21/1976 |
| 3995689 | Air cooled atmospheric heat exchanger A low cost, preformed, synthetic resin, indirect air cooled atmospheric heat exchanger especially adapted for use in water cooling towers is provided which exhibits enhanced water cooling properties notwithstanding fabrication thereof from relatively inex... | 12/07/1976 |
