Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
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 |
| 5815310 | High numerical aperture ring field optical reduction system An optical projection reduction system used in photolithography for the manufacture of semiconductor devices having a first mirror pair, a second field mirror pair, and a third mirror pair. Electromagnetic radiation from a reticle or mask is reflected by ... | 09/29/1998 |
| 5757160 | Moving interferometer wafer stage A stage used for positioning and aligning a wafer, as used in photolithography or microlithography in semiconductor manufacturing having a plurality of interferometer laser gauges placed on a movable wafer stage associated with a pair of stationary orthog... | 05/26/1998 |
| 5660273 | Single patient dose medicament dispenser with applicator A tray having wells or depressions therein for holding a medicament or material and an applicator for applying the medicament or material. The applicator well has one open end from which a portion of the applicator extends. A cover seals the medicament or... | 08/26/1997 |
| 5396385 | Floppy disk drive The present invention aims at reducing the thickness of a floppy disk drive by minimizing a vertical movement of a floppy disk-retaining disk holder and reducing the height of a chassis. The disk holder is provided on both side surfaces of its rear end po... | 03/07/1995 |
| 5352962 | Brushless polyphase reduced force variation motor A control for brushless motors having polyphase moving coil armatures, sinusoidal commutation, and integral linear hall effect commutation sensors providing a correction signal such that the sum of the squares of the commutation signals is maintained at a... | 10/04/1994 |
| 5324273 | Disposable barrel dental impression material syringe A disposable barrel dental impression syringe having a rotatable malleable needle cannula. A disposable barrel is fitted with a malleable needle cannula that is seated to permit easy rotation thereof. A handle is threaded onto the open end of the barrel. ... | 06/28/1994 |
| 5306012 | Simulation training device The present invention is a simulation training device in which a user's form can be so corrected as to coincide with a correct form displayed on a TV screen, a resin film of a pale dark color is mounted on one surface of a transparent convex member to for... | 04/26/1994 |
| 5295844 | Connector The present invention is a connector having a socket connector including a cover and a plug connector to be engaged with the socket connector, wherein the cover is made of metal, the metal cover is pivotally secured at its one end to a molded body to be r... | 03/22/1994 |
| 5273426 | Transformable orthodontic O-ring dispenser An orthodontic O-ring holder that can be transformed from a linear shape to a ring shape having a central tree or core with a plurality of orthodontic O-rings attached thereto. The orthodontic O-rings are frangibly attached to the central tree or core for... | 12/28/1993 |
| 5267859 | Bulk dental cartridge A dental cartridge for dispensing a dental material having a body portion made of a material transparent to at least a portion of the visible light spectrum and opaque to the actinic light of the dental material contained therein. Also, a dental cartridge... | 12/07/1993 |
| 5243480 | Floppy disk drive The present invention aims at reducing the thickness of a floppy disk drive by minimizing a vertical movement of a floppy disk-retaining disk holder and reducing the height of a chassis. The disk holder is provided on both side surfaces of its rear end portion... | 09/07/1993 |
| 5237964 | Internal combustion engine with a new sequence of operation and combustion An internal combustion engine having multiple constant volume combustion chambers associated with each piston of the engine. The combustion within each of the combustion chambers is controlled to obtain fully developed combustion with high pressure result... | 08/24/1993 |
| 5230792 | Ultraviolet water purification system with variable intensity control An ultraviolet purification system in which ultraviolet radiation is generated by an ultraviolet lamp wherein the amount of ultraviolet radiation is varied in accordance with fluid flow. The intensity of the ultraviolet lamp is controlled by a circuit whi... | 07/27/1993 |
| 5212593 | Broad band optical reduction system using matched multiple refractive element materials A broad band catadioptric optical reduction system using refractive elements made of different types of glass matched for color correction over a broad band width. A combination of fused silica and crown glass is used. An aspheric mirror is used for impro... | 05/18/1993 |
| 5199567 | Single patient dose dental cartridge tray and organizing system A dental tray for counting, storing, shipping and dispensing cartridges that includes a plurality of integrally formed wells for securely holding and sealing a dental cartridge which are placed horizontally within the wells in a manner whereby the dischar... | 04/06/1993 |
| 5193972 | Wafer handling system This invention relates to apparatus for prealigning the transport stage of an automated wafer handling lithographic system. The wafer is first rotated and its displacement in X, Y, and .THETA. from a desired orientation is determined. The wafer chuck of t... | 03/16/1993 |
| 5190393 | Device at expandable mounting sleeve The invention concerns expandable fastenings of the kind that includes a conical shaft part (2) and a conical expandable sleeve (4) that is pressed up on the conical part (2) of the shaft (1) in order to fill out and fasten the shaft in a mounting hole. T... | 03/02/1993 |
| 5178503 | Fastener assembly having flat surface for stabilizing the barrel of a power actuated gun A fastener assembly for use with a power actuated gun including a bracket and associated stud wherein the bracket is formed with at least two fingers extending upward therefrom. The fingers are formed so as to permit the fastener assembly to be frictional... | 01/12/1993 |
| 5172807 | Cement mixing capsule A dental capsule for mixing a cement powder with an activating liquid having a frangible seal. The frangible seal is placed between a nozzle and the body portion of a capsule preventing unmixed cement from entering the nozzle. The nozzle has a circumferen... | 12/22/1992 |
| 5165890 | Dosing dental cartridge A dental cartridge for dispensing a dental material having a body portion made of a material transparent to at least a portion of the visible light spectrum and opaque to the actinic light of the dental material contained therein. Also, a dental cartridge... | 11/24/1992 |
| 5160974 | Closed sample cell for use in flow cytometry A closed flow cell having a cavity with a flexible diaphragm at either end of a flow tube. A sample having particles or biological cells suspended in a fluid is placed within either cavity. Movement of the diaphragm forces the fluid to flow through the fl... | 11/03/1992 |
| 5127933 | Complete fertilizer and fungus nutrient material with low solubility and method for making same A complete fertilizer and nutrient material with low solubility comprised of potassium calcium sulfate, calcium ammonium phosphate, and ammonium bitartrate. The low solubility fertilizer is made easily from commonly available substances. Potassium bi-tart... | 07/07/1992 |
| 5125836 | Easy loading manual extruder for viscous material A manual extruder or syringe having a longitudinal slot therein adjacent the full circumference front end for receiving the nozzle of a cartridge. A barrel of a syringe having a front end and a breach opening adjacent thereto for receiving a cartridge of ... | 06/30/1992 |
| 5125708 | Wedge gripper A gripper for use in automation or robitics having a centrally located pin improving precision. A double wedge type gripper having sliding inclined surfaces is used in combination with a piston for forcing the gripper fingers open and closed. A pin slides... | 06/30/1992 |
| 5122057 | Dosing dental cartridge A dental cartridge for dispensing a dental material having a body portion made of a material transparent to at least a portion of the visible light spectrum and opaque to the actinic light of the dental material contained therein. Also, a dental cartridge... | 06/16/1992 |
| 5110247 | Fastener assembly with retaining fingers for use with a power actuated gun A fastener assembly for use with a power actuated gun including a bracket and associated stud wherein the bracket is formed with at least two fingers extending upward therefrom. The fingers are formed so as to permit the fastener assembly to be frictional... | 05/05/1992 |
| 5106297 | Dental bonding liquid and sealant tray A dental tray having depressions therein for holding a bottle of dental material upside down and having wells of distinctive shape and configuration. An inexpensive disposable tray is disclosed for use in preparing single or multiple component bonding liq... | 04/21/1992 |
| 5092682 | Transportable shower bag A mesh shower bag having a reinforcing panel adjacent a zipper and a suction cup and clip. The mesh bag is easily transportable when used to carry wet or damp items to and from wet locations such as a shower. The bag can be attached by a suction cup in a ... | 03/03/1992 |
| 5085558 | Wafer handling system This invention relates to a method and apparatus for prealigning the transport stage of an automated wafer handling lithographic system. The wafer is first rotated and its displacement in X, Y, and .THETA. from a desired orientation is determined. The waf... | 02/04/1992 |
| 5085249 | Valve for a vascular dilating device An improved valve for use in angioplasty comprising a cup shaped body having a piston adapted to slide into a first and second position therein. A passage and a plurality of chambers and openings are formed within the piston. The piston is biased in a fir... | 02/04/1992 |
| 5065414 | Pedometer A pedometer which has a walking sensor for detecting a walking by the vibration of a walker's body, a counter for counting the number of walker's walking steps from the walking sensor, an indicator for indicating the value of the counter, a walking refere... | 11/12/1991 |
| 5060641 | Apparatus and method for the treatment of flexural deformities, contracted tendons, and angular limb deformities in foals A pneumatic cast having an uninflatable longitudinal portion and a circumferential portion to provide support. The pneumatic cast is positioned over the affected leg of a newborn foal to correct various anatomical abnormalities. The pneumatic cast is posi... | 10/29/1991 |
