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...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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Assignee: Protrend Co., Ltd.


Location: Taipei, TW
No. of patents: 15

NumberTitleIssue Date
8028966Hanger device
A hanger device includes an open-back metal housing having two sidewalls formed with a notch each, and a hook connected to a bottom thereof; a plastic seat embedded in the metal housing and having a transverse recess; a release control element vertically slidably co...
10/04/2011
D600053Wall panel for sectional cabinet
09/15/2009
7516930Garment hanger rod holder
A garment hanger rod holder is configured for assembled to upper and lower horizontal metal bars at a front of a metal rack, and includes a main body and a movable member mounted to a rear side of the main body. The main body includes a top hook head for hooking to ...
04/14/2009
7506772Wall-mount rack
A wall-mount rack includes at least two vertical posts, at least two hangers, and at least one container. Each of the vertical posts is provided on two lateral sides with one longitudinal row of holes each. The hangers are hooked to two corresponding holes at the sa...
03/24/2009
7497344Supporting bracket for wall-mount rack
A supporting bracket is designed to connect to a wall-mount rack by inserting hooks provided at a rear end of the bracket into holes provided on a front side of a vertical post of the wall-mount rack. The supporting bracket includes two parallelly spaced side wall p...
03/03/2009
D546080Shoes rack support
07/10/2007
D536539Hanger
02/13/2007
6971528Connecting structure for sectional rack
A connecting structure for sectional rack includes a plurality of vertical posts, horizontal shelves, and connecting members. Each of the vertical posts is provided with at least one row of engaging holes, with which upper and lower hooks at an end of each connectin...
12/06/2005
6902244Drawer rail structure allowing adjusting of vertical position of drawer front panel
A drawer rail structure includes two guide rails mounted to a piece of furniture, and two slide rails mounted to a drawer. Each of the guide rails is provided at a front end with a first roller, and each of the slide rails at a rear end with a second roller and at a...
06/07/2005
6748878Shelf positioning mechanism for sectional rack
A shelf positioning mechanism for sectional rack constructed particularly from vertical posts having spaced horizontal annular grooves and horizontal shelves mainly includes a positioning member fitted between a short sleeve provided at each corner of the shelf and ...
06/15/2004
6726040Sectional rack with drawers
A sectional rack that can be assembled without using any tool and type of fastener includes oblong-sectioned vertical posts having horizontal slots symmetrically provided on two opposite sides, and externally, gradually, downwardly expanding connecting members adapt...
04/27/2004
6527473Connector for linearly connecting twin-column supporting posts of sectional rack
A connector is configured to securely hold two twin-column supporting posts of an upper and a lower side supporter of a sectional rack to a linearly connected position. With the connector, the side supporters having twin-column supporting posts of the rac...
03/04/2003
6524025Means for linearly connecting two non-circular pipes
A means for linearly connecting two non-circular pipes mainly includes a bar, upper and lower pads put around the bar, and a collar. The bar has two externally threaded ends adapted to screw into internally threaded holes preformed in the non-circular pip...
02/25/2003
6364138Sectional rack
A sectional rack includes a plurality of vertical posts, a plurality of horizontal shelves, and a plurality of connecting members. Each of the vertical posts is a hollow post and has a generally I-shaped cross section with two substantially rectangular an...
04/02/2002
5924581Easy-mount shelf holder for a sectional rack
An easy-mount shelf holder for a sectional rack. The rack includes upright posts having spaced annular grooves for externally tapered sleeves attached thereto and shelves supported by shelf holders mounted around the sleeves. Each shelf holder includes a ...
07/20/1999
 
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