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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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Class 435/291.8 - Rotating vessel


Subclass of Class 435 - Chemistry: molecular biology and microbiology
Definition: Apparatus which includes a horizontally disposed vessel
No. of patents: 2
Last issue date: 04/11/2006


NumberTitleIssue Date
7026131Methods and apparatus for blood typing with optical bio-discs
This invention relates to clinical diagnostic assays, related optical bio-discs, and a disc-reading apparatus. The invention is directed to methods and apparatuses for performing immunohematology assays using an optical bio-disc analysis system. The invention is fur...
04/11/2006
6059971Device and process for thickening and conveying waste water sludge
The present invention relates to a device and a process for thickening and conveying waste water sludges, especially with a centrifuge. Here, the centrifuge has at least one lysis device for the breaking down of cells of organisms contained in the waste w...
05/09/2000
 
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