...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.
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 |
| 5014353 | Face shield A face protecting device comprising a generally concave shield having an inwardly projecting peripheral border portion and provided with an observation opening therein, said shield being further provided with two spaced angularly disposed hand grips in th... | 05/14/1991 |
| 5014354 | Anti-abrasion protective device An abrasion device in the form of a support member of stretch fabric and a plurality of elongated strips of cushioning material is secured to the user's body. The strips are secured to the support member and positioned against the portion of the user's bo... | 05/14/1991 |
| 5014355 | Disposable environmental control suit A disposable environmentally controlled suit. The suit includes a coverall made of an inexpensive material which is relatively non-permeable to air. Elastic closures are provided at the neck and the terminal portions of the arms and legs. A manifold is fo... | 05/14/1991 |
| 5014356 | Dropseat jumpsuit A jumpsuit with an improved, utilitarian dropseat having a bodice attached to pants at the front waist seam. The pants have hidden, in-seam side pockets that facilitate the opening of the dropseat area. The dropseat area has a back, elasticized waistband ... | 05/14/1991 |
| 5014357 | Coverall for protection against steam jets A coverall is provided for protecting its wearer against jets of steam. The coverall comprises an outer shell of a woven fabric of poly(p-phenylene terephthalamide) continuous filament yarns weighing at least about 230 g/m2, laminated on its ou... | 05/14/1991 |
| 5014358 | Shooting coat for absorbing shock of shooting A shooting coat for absorbing shock of shooting comprises an outer cloth, a gun receiver pad attached to a rear surface of the outer cloth, a plurality of projections dispersed uniformly on an outer surface of the gun receiver pad, and a lining cloth atta... | 05/14/1991 |
| 5014359 | Vest and backpack combination This invention is directed to a vest and backpack combination which can be adjusted to fit people of different sizes and configurations. In fact, the combination can be adjusted so that a person wearing the combination need not have anything between the p... | 05/14/1991 |
| 5014360 | Removing perspiration A jersey or shirt of lightweight material with left and right short sleeves has moisture-absorbent material at least on the front panel of at least one sleeve.... | 05/14/1991 |
| 5014361 | Polyurethane elastic glove having improved puncture and tear resistance A polyurethane glove having improved tear and puncture resistance is made from the reaction product of an aliphatic diisocyanate, an aliphatic polyether diol having a molecular weight in the range of about 1,000 to about 5,000 and an aliphatic diol contai... | 05/14/1991 |
| 5014362 | Elastomeric covering material and hand glove made therewith An elastomeric material and gloves made therewith are substantially impermeable to water vapor and liquid water, have a relatively high tensile strength, and have a relatively low resilience. The gloves conform to the shape of a hand when stretched to fit... | 05/14/1991 |
| 5014363 | Wearing apparel with ventilation material Wearing apparel with an air-impermeable or only slightly air-permeable layer which is lined with ventilation material which has longitudinal air duct and transverse air ducts.... | 05/14/1991 |
| 5014365 | Gas-fitted protective helmet A protective helmet employs an inflatable bladder on the interior of the helmet. The inflatable bladder has cells that extend to the lower rear octants of the wearers head and also to either the crown or upper front octants of the wearers head. The cells ... | 05/14/1991 |
| 5014366 | Enhanced visibility helmet A helmet structure including a transparent shell. The transparent shell including a matrix of ventilation apertures coextensive with the shell. The shell further including a visor mounted at a forward end thereof overlying a forward facial opening, includ... | 05/14/1991 |
| 5014367 | Commode seat lifting apparatus Apparatus including a hydraulic cylinder mounting an L-shaped piston lever therewithin wherein the L-shaped lever is mounted to a rearward most portion of the under surface of a commode seat. A pneumatic chamber directs pressurized air through an associat... | 05/14/1991 |
| 5014368 | Method for monitoring the discharge of liquids and apparatus therefor The invention is directed to a method and apparatus for monitoring liquids ischarged intermittently from a discharge receptacle having a siphon. The liquids originate in a facility in which personnel work with open radioactive substances. Measurements are ... | 05/14/1991 |
| 5014369 | Pool cover tie-down A tie-down particularly adapted for use in combination with a pool cover which importantly prevents any marring, scratching or damage to the surface of the deck surrounding the pool. The tie-down is generally flat and smooth and made from a tough flexible... | 05/14/1991 |
| 5014370 | Swimming pool bulkhead A bulkhead is illustrated with sockets through the top deck and an intermediate platform to provide a box-frame structural strength to the bulkhead and to receive pool attachments for swimming activities, such as diving platforms or water polo goals. Anot... | 05/14/1991 |
| 5014371 | Portable salon unit A portable salon unit includes a movable cart with a wash basin adjustably attached thereto. The wash basin is adjustable vertically with respect to the cart, horizontally with respect to the cart, rotatably about a vertical axis adjacent the cart, about ... | 05/14/1991 |
| 5014372 | Self-rotating spa jet assembly A hydrotherapy jet assembly that produces rotating and pulsating streams of water and provides for user adjustable flow control, and user adjustable control of the speed of rotation independently of the flow control. The assembly includes a nozzle rotor s... | 05/14/1991 |
| 5014373 | Bath pillow A bath pillow is adapted to be supported by and anchored to a bathtub-like structure and a wall structure. A user may rest his or her head and back against the bath pillow. A first support cushion supports the head and a second support cushion supports th... | 05/14/1991 |
| 5014374 | Restraint stretcher A restraint stretcher comprising an envelope for receiving a rigidifying backboard, and having transverse straps for encircling the body of a patient at specific areas, the straps being mounted for longitudinal movement to fit various sizes of patient. Th... | 05/14/1991 |
| 5014375 | Surgical pad A resilient foam surgical pad is adapted for use with surgery patients supported thereon in a prone position. The patient's abdomen hangs freely in a cavity formed in a torso support block. The reduced pressure on the abdomen lessons the amount of bleedin... | 05/14/1991 |
| 5014376 | Apparatus for holding and supporting an infant An apparatus for supporting and securely holding an infant is disclosed. In its preferred embodiment, the apparatus includes a wedge-shaped resilient support member having an inclined surface for supporting an infant thereon. A blanket is provided which i... | 05/14/1991 |
| 5014377 | Pillow An anti-snoring pillow which reduces the snoring by the user when sleeping by positioning the head of the user such that the degree of blockage in the user's breathing passageway is reduced. The anti-snoring pillow includes a base member which is preferab... | 05/14/1991 |
| 5014378 | Pneumatic mat with safety apparatus A pneumatic bed having an inflatable member, a fixed member, a valve, and an element having a port in which the valve is seated. This element normally confines inflation gas supplied to the inflatable member, and is normally movable with respect to the fi... | 05/14/1991 |
| 5014379 | Combination tool A combination tool which is substantially a pair of pliers in which the handles are parallel to each other and have at their handle ends screwdriver tips and have a free floating rubber sleeve on each handle which may be gripped to put pressure on the scr... | 05/14/1991 |
| 5014380 | Process and installation for heat treatment of textile threads Installation including a steaming chamber, a first, upstream cold chamber and a second, downstream cold chamber, with the length of the upstream cold chamber being at least equal to that of the downstream cold chamber. The upstream and downstream cold cha... | 05/14/1991 |
| 5014381 | Rolling platform assembly The present invention relates to a method of installing a platform assembly designed to be mounted below a bridge deck to prevent impeding traffic below the bridge deck during installation of the paltform assembly and during demolition of the bridge. The ... | 05/14/1991 |
| 5014382 | Swimming pool cleaner A swimming pool cleaner comprising a forwardly inclined body having a flow passage therethrough, an inlet foot having a water inlet foot being attached to the body and connected to the flow passage and when in use, is proximate to a surface to be cleaned,... | 05/14/1991 |
| 5014383 | Offset denture brush A brush apparatus consisting of a planar member with a plurality of bristles affixed to a body and handle unit whereby the handle is parallel to and axially offset from the centerline axis of the said planar member.... | 05/14/1991 |
| 5014384 | Pad attachment for paint roller assemblies A pad attachment for a paint roller assembly including a pad holder affixed to a roller type paint applicator. The pad holder retains a paint trimming and smoothing material in a form of a fabric or foam. The material retained by the holder is positioned ... | 05/14/1991 |
| 5014385 | Cleaner cord wrap A cleaner is shown having a cord wrapped around a switch operating pedal with the operating pedal always being in a protective position over the switch.... | 05/14/1991 |
| 5014386 | Suction nozzle, with a brush, for a vacuum cleaner A suction nozzle for a vacuum cleaner, including a brush that is disposed in the suction nozzle and is driven by a battery-powered electric motor. The suction nozzle is in flow communication with the vacuum cleaner via a suction hose. The suction nozzle i... | 05/14/1991 |
| 5014387 | Brush roll mounting A brush roll assembly for an upright vacuum cleaner having mounting blocks at each end to support the brush at different levels, to account for wear, depending on the selected angular orientation of such blocks. The blocks, while of different size to prev... | 05/14/1991 |
| 5014388 | Battery powered vacuum cleaner This invention relates to improvements in vacuum cleaners, and is more in particular directed to the provision of a battery powered upright vacuum cleaner.... | 05/14/1991 |
| 5014389 | Foot manipulated suction head and method for employing same A method and apparatus for aspirating fluids from a surgical operating room utilizing a suction head that readily slides along the floor in response to translational forces applied by foot by operating room personnel. The suction head has a flat bottom su... | 05/14/1991 |
| 5014390 | Device for attaching a flexible covering element such as a piece of a carpeting or a mat to its support The invention pertains to a device for attaching a flexible covering element such as a piece of carpeting or a mat to its support characterized in that, to prevent loosening, the device comprises tooth-shaped protuberances under a collar such that the tee... | 05/14/1991 |
| 5014391 | Lockable caster wheel A lockable caster wheel, in particular for movable hospital beds, has a fastening pin (1) and a swivel arm (8) which is positioned in a swivel bearing (7) with respect to said fastening pin. A wheel carrier (10), which bears at least one wheel (13), can s... | 05/14/1991 |
| 5014392 | Self-orientatable twin wheel of the kind comprising a pair of coaxial wheels A self-orientatable twin wheel which includes a support which supports a pivot upon which are mounted a pair of wheels. The pair of wheels are provided with hollow tangs into which the pivot is inserted. Bushes with inner and outer collars are interposed ... | 05/14/1991 |
| 5014393 | Vibrating mold assembly A continuous caster vibrating mold assembly having lever arms each with a pivot pin including a hollow tubular sleeve having open ends for encircling a removable load cell having strain gauges attached thereto for measuring loads on a pivot joint. When lo... | 05/14/1991 |