Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 5056547 | Relative humidity generation technique A humidity generating method and apparatus which utilizes a source of air which can be supplied to a saturator and to a drier for supplying wet and dry air streams. Control means are provided to control a cyclical supplying of alternating timed quantities... | 10/15/1991 |
| 4844982 | Fluorocarbon polymer compositions and articles shaped therefrom High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, suc... | 07/04/1989 |
| 4795366 | Electrical connector handle An electrical connector handle for use with a plural cable electrical connector assembly. The handle has a pair of D-shaped, spade handles extending rearwardly from a housing that releasably retains the electrical cable-connector assembly. An integral cab... | 01/03/1989 |
| 4666642 | Method of forming shaped article from a fluorocarbon polymer composition High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, suc... | 05/19/1987 |
| 4637955 | Wire insulated with a fluorocarbon polymer composition High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, suc... | 01/20/1987 |
| 4627844 | Tri-layer tubing A coextruded tri-layered medical-surgical tubing for the administration of common medicines such as insulin and nitroglycerin solutions is disclosed. Improved flexibility and uniformity and increased peel strength are obtained by interposing a layer of an... | 12/09/1986 |
| 4490314 | Radiation cured silicone rubber articles A process for making radiation cured silicone rubber articles is disclosed wherein a hydroxyl-terminated polysilaxane having a molecular weight from about 50,000 to about 2,000,000, optionally modified by mixing with up to 85% of an end-stopped silicone r... | 12/25/1984 |
| 4488885 | Electrostatic charging apparatus A charging apparatus constructed to provide a continuous ac voltage and periodic pulses between the corona electrodes and non-corona electrodes contained therein.... | 12/18/1984 |
| 4485428 | High voltage pulse generator A high voltage pulse generator is provided which so interacts with the parameters of an electrostatic precipitator that excellent pulse waveforms are obtained more efficiently by using less elaborate components than heretofore required. A major feature of... | 11/27/1984 |
| 4432250 | Hotwell sampling system An apparatus and method for sampling condensate from a vacuum chamber employing a positive displacement pump, a pulsation dampener having sufficient volumetric flexibility to substantially dampen the pump's pressure surge, and a pressure regulating valve.... | 02/21/1984 |
| 4426549 | Track and erosion resistant electrical insulation comprising zinc borate and ethylene polymer Track and erosion resistant electrical insulating materials are disclosed comprising (a) a base insulating material comprising a polymer of ethylene and additives necessary to allow the polymer to function as electrical insulation, and (b) hydrated zinc b... | 01/17/1984 |
| 4378393 | Heat-shrinkable article Heat-resistant pressure-sensitive adhesives are used to form the closure of a heat-shrinkable wrap-around sleeve. Suitable pressure-sensitive adhesives include silicone-based adhesives, thermosetting acrylic adhesives, and thermosetting rubber/resin adhes... | 03/29/1983 |
| 4362674 | Process for making radiation cured silicone rubber articles A process for making radiation cured silicone rubber articles is disclosed wherein a hydroxyl-terminated polysiloxane having a molecular weight from about 50,000 to about 2,000,000, optionally modified by mixing with up to 85% of an end-stopped silicone r... | 12/07/1982 |
| 4230947 | Apparatus for treating flowable material An apparatus for treating flowable material falling through an irradiation zone in the form of a thin, substantially nonturbulent, cohesive layer including in combination an outlet reservoir adapted to catch the falling material after it is irradiated; a ... | 10/28/1980 |
| 4198590 | High current triggered spark gap A triggered spark gap suitable for use with high levels of voltage and current over long periods of time generally comprising support means, a pair of insulated main electrodes disposed opposite each other on the support means so as to form a gap therebet... | 04/15/1980 |
| 4183736 | Electrostatic precipitation An improved procedure is disclosed for the electrostatic precipitation of particulates entrained in a stream of gas between corona electrodes and collecting electrodes. The underlying dc field which serves to charge the particulates and transport them out... | 01/15/1980 |
| 4133649 | Reduced power input for improved electrostatic precipitation systems An improved procedure is disclosed for supplying the power to an electrostatic precipitation system of the type wherein an underlying dc field serves to charge the particulates and transport them out of the stream of gas, while the corona which is require... | 01/09/1979 |
| 4122346 | Optical devices for computed transaxial tomography Various optical devices for use with circular-scanning techniques in computed transaxial tomography are disclosed. In essence such devices produce a rotating dipole field so as simultaneously to provide a circular scan and to focus the charged particle be... | 10/24/1978 |
| 4099859 | Contact lens having a smooth surface layer of a hydrophilic polymer A contact lens comprising a silicone polymer or copolymer core and a hydrophilic polymer surface grafted to the core is formed by contacting a silicone with a free radical polymerizable precursor to the polymer in a liquid state and subjecting the precurs... | 07/11/1978 |
| 4055682 | Catheter and the method of making A silicone catheter is rendered hydrophilic by contacting it with N-vinyl pyrrolidone (NVP) in bulk or in solution and exposing the catheter and NVP to ionizing radiation at high dose rate. Penetration of the NVP beyond a thin surface layer is prevented b... | 10/25/1977 |
