...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 |
| 7365775 | Image compression apparatus and method, image regeneration apparatus, camera and camera system A process and apparatus for displaying and recording image data can be smoothly performed in characteristic methods by computing a quantization parameter for use in compression of image data, obtaining a difference in the amount of processes between the display of i... | 04/29/2008 |
| 7225896 | Collapsible handrail mechanism A collapsible handrail mechanism for steps or a ladder including: an outer stringer and an inner stringer jointly pivotable about a pivot point; a stanchion located between the outer and inner stringers and pivotal... | 06/05/2007 |
| 7195386 | Light guiding member, illumination apparatus, and projector A light guiding member guides diffusion light using as a central axis a substantial center of the diffusion light emitted from a light source, and comprises a tapered rod and a pipe. The tapered rod comprises an incident end face, an emissive end face having an area... | 03/27/2007 |
| 7194202 | Waterproof protector device and waterproof protector system using the same A waterproof protector system comprises a body protector which stores a camera body, a first port member to be attached to the body protector, and a second port member to be attached to the first port member. The body protector is formed having a first opening porti... | 03/20/2007 |
| 5339528 | Transparency holder for navigation aid A transparency holder for use in a navigation device is disclosed. The transparency holder is positioned between a lens and a compass, and is adapted to receive a map transparency in one correct orientation only. The one orientation only feature is achiev... | 08/23/1994 |
| 5325396 | Subscriber unit for wireless digital subscriber communication system A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processor chip transcodes a digital v... | 06/28/1994 |
| 5282331 | Display module A display module for attachment to the framing members adjacent a lighting fixture. The module is comprised of a light transmissive trough which is suspended beneath the lighting fixture and receives its light from the fixture without substantially impair... | 02/01/1994 |
| 5255779 | File folder with disk pocket A file folder having a selectively configured compartment for holding and protecting a computer diskette within a stiff body member is disclosed. The compartment is defined by a spacer member disposed within the left or right cover of the file folder. A m... | 10/26/1993 |
| 5240763 | Dimensionally stable papermakers fabric A papermakers fabric and method of designing and manufacturing same which exhibits high tolerance to temperature and/or moisture variation and as a result, retains dimensional stability avoiding these problems. A specific fabric construction is selected h... | 08/31/1993 |
| 5240733 | Dietary fibre composition Significant improvements to the milling of wheat kernels are possible by sequentially removing the bran layers of the kernels prior to processing in general accordance with the conventional milling principles. The wheat kernels are preprocessed by means o... | 08/31/1993 |
| 5235670 | Multiple impulse excitation speech encoder and decoder The generation of multipulse excitation codes by digitizing an original speech, partitioning the digitized signal into a number of samples, pre-emphasizing the samples, producing linear predictive reflection coefficients from said samples, quantizing thes... | 08/10/1993 |
| 5218727 | Above ground spa lift for the handicapped A lift apparatus for an above ground spa or pool to enable a handicapped or infirm person access to and egress from the spa or pool without the need for an attendant to assist them. The lift comprises an upright base securely mounted adjacent to one wall ... | 06/15/1993 |
| 5209807 | Papermakers fabric for corrugation machines A corrugation machine includes a woven papermakers fabric. The fabric has at least four layers of bulky yarns interwoven with monofilament yarns. The yarns and weave patterns are selected such that the fabric has a caliper of at least 0.2 inches, a weight... | 05/11/1993 |
| 5199467 | Papermakers fabric with stacked machine direction yarns An industrial fabric, preferably for use as a papermakers fabric, having a system of flat monofilament machine direction yarns hereinafter MD yarns, which are woven in stacked, vertical alignment throughout the body of the fabric. Preferably, each upper M... | 04/06/1993 |
| 5094719 | Belt filter press fabric The present invention provides a belt filter press fabric for supporting pressing and draining moisture from a moisture laden web in a press having an inlet end, an outlet end and at least one pressure nip. The fabric is comprised of machine direction mon... | 03/10/1992 |
| 5092370 | Split heddle with superimposed blades with aligned apertures A split heddle for controlling a yarn is particularly useful in automated seaming machines. The heddle is comprised of two blade like members. Each member has an aperture which is intersected on one side by a slot and on the other side by a groove. The me... | 03/03/1992 |
| 5082532 | Papermaking machine and a seamed papermaker's fabric A seamed wet press felt installed in a press position in a papermaking machine has a base fabric with end loops intermeshed and joined in the seam and a layer of batt material needled to the base fabric and which was cut adjacent the seam area prior to in... | 01/21/1992 |
| 5081171 | Composition for sealing of painted or metal surfaces A liquid composition for protecting a positively charged surface, the composition comprising: negatively charged polytetrafluoroethylene polymer resin particles and at least one member of the group consisting of methyltrimethoxysilane and an amino functio... | 01/14/1992 |
| 5053109 | Single layer seamed papermakers fabric An apparatus for manufacturing paper board includes a hybrid papermakers fabric which facilitates both the formation of an aqueous paper board web and the dewatering of the formed web through at least one press nip. The papermakers fabric includes a woven... | 10/01/1991 |
| 5050646 | Papermakers fabric for corrugation machines A corrugation machine includes a woven papermakers fabric. The fabric has at least four layers of bulky yarns interwoven with monofilament yarns. The yarns and weave patterns are selected such that the fabric has a caliper of at least 0.2 inches, a weight... | 09/24/1991 |
| 5048545 | Smoking device According to a smoking device of the present invention, major and a minor smoke streams given out during smoking are temporarily stored in a storage section by means of a forcible sucking device. The storage section is taken out to the outdoors later, and... | 09/17/1991 |
| 5005608 | Split heddle with superimposed blades with aligned apertures A split heddle for controlling a yarn is particularly useful in automated seaming machines. The heddle is comprised of two blade like members. Each member has an aperture which is intersected on one side by a slot and on the other side by a groove. The me... | 04/09/1991 |
| 4905877 | Adjustable garment hanger The adjustable garment hanger of the present invention has a main body member having a pair of oppositely extending arms engaged within a pair of auxiliary sleeves which may be adjusted to provide a hanger arm of variable lengths. Each of the opposed arms... | 03/06/1990 |
| 4806208 | Method of seaming a seamed felt on a papermaking machine with oppositely tapered pintle elements A pintle unit and method of closing a seam in a papermakers felt which provides a tight closure along the full length of the seam. The seam is closed with a pintle unit made up of a plurality of pintle elements which are tapered and pulled into the seam t... | 02/21/1989 |