Did You Know...
...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 |
| 6755937 | Paper sheet having improved rate of absorbency New and improved methods and products are disclosed relating to softness of fibrous webs. Increased softness, among other things, is obtained by abrading the surface of the web to create fuzziness from protruding fibers. ... | 06/29/2004 |
| 6080457 | Particulate sorbent smoke filter A smoke filter consists of substrate threads and/or strips each pre-coated with particulate sorbent (e.g. activated carbon granules), gathered together in solid or tubular rod form e.g. within a containing sleeve. When the gathered threads and/or strips f... | 06/27/2000 |
| 4788988 | Smoking device A smoking device is disclosed whereby smoke and other gases of combustion can be diluted with air to a pre-selected mixture before being inhaled by a smoker. This is achieved by the use of a carbureting tube which can introduce a metered amount of air int... | 12/06/1988 |
| 4577645 | Reduced moisture smoker's pipe An improved smoker's pipe of the dry bowl type. The pipe is comprised of a hollow stem having a mouthpiece mounted at one end and a bowl assembly mounted at the other end. In one embodiment of the pipe the bowl assembly includes an outer bowl removably mo... | 03/25/1986 |
| 4210160 | Anti-pollution combustion device An anti-pollution combustion device has a bowl in the interior of which is located, above the connection between the bowl and stem, a perforated metal disc so that the tobacco rests on the same. The outside of the bowl is formed with circumferentially ext... | 07/01/1980 |
| 4121598 | Smokers' pipes A smoker's pipe comprising a stem unit incorporating the base of the bowl and formed of a plastics material and a bowl element detachably fitted to the bowl base portion and preferably formed of briar, the stem unit including the bowl base being internall... | 10/24/1978 |
