Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6010569 | Device for handling heavy components of a crystal puller according to the Czochralski method which is supported in a supporting frame In a device for handling heavy components of a crystal puller according to the Czochralski method, a supporting beam that can be pivoted about one vertical leg of a supporting frame and vertically adjusted includes holding claws for accommodating componen... | 01/04/2000 |
| 6004109 | Apparatus for the rapid evacuation of a vacuum chamber A first vacuum pump (14) is connected to a vacuum chamber (5) by a primary intake line (13) having a first vacuum valve (4) therein. A second vacuum pump (15) is connected to the output of the first vacuum pump (14) by a connecting line (20) having a seco... | 12/21/1999 |
| 5993622 | Apparatus for coating a web on a rotating drum by plasma assisted vapor deposition A crucible (4) in a vacuum chamber (3) holds material to be evaporated, such as a metal or metal oxide or a mixture of a metal and a metal oxide, and a coating roll (6) guides a film web (8) a certain distance away from the material to be evaporated. A ch... | 11/30/1999 |
| 5944967 | Dual target cathode assembly with shielding A dual magnetron cathode assembly includes a pair of elongate, parallel targets in coplanar relationship fixed to respective magnetic yokes with associated rows of permanent magnets for producing a magnetic field over the targets. A common back plate is p... | 08/31/1999 |
| 5879138 | Two-stage rotary vane vacuum pump The invention pertains to a rotary vane vacuum pump (1) with a high vacuum stage (9, 22), with a fore-vacuum stage (8, 21), with a substantially cylindrical rotor (3) which has bearing and anchor segments (11 and 21, 22), a bearing segment (11) being situ... | 03/09/1999 |
| 5821404 | Test gas leak indicator The invention relates to a process for operating a test gas leak indicator (1) with a gas inlet (2) and a test gas-sensitive detector (4), in which all or part of a stream of gas containing the test gas reaching the inlet (2) is taken to the detector (4) ... | 10/13/1998 |
