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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5495854 | Self-testing device for measuring urinary flow rates A device, a kit of devices, and a method for providing an individual with a means of self-testing for urinary tract obstructions and bladder condition in a simple and inexpensive manner.... | 03/05/1996 |
| 5483830 | Method and apparatus for measuring a liquid flow using a siphon unit and an aerating duct The invention provides a measuring apparatus for measuring small liquid flows, particularly in the medical sector. The measuring apparatus comprises a siphon unit as a liquid flow sensor, a measuring chamber being located in its retention area. As soon as... | 01/16/1996 |
| 5263370 | Liquidometer A liquidometer composed of a siphon for emitting a sample liquid stored in a reservoir and a liquid level sensor for sensing the level of the sample remained in the reservoir. The siphon further includes a pair of sensors for counting the number of emissi... | 11/23/1993 |
| 4911891 | Sample monitoring instrument for on-line application An apparatus and method for on-line monitoring of a characteristic of a process liquid stream includes a cell for isolating a precise volume of the liquid. There are provided means for over-filling a sample chamber and means for removing the excess from t... | 03/27/1990 |
| 4910151 | Sample monitoring instrument for on-line application An apparatus and method for on-line monitoring of a characteristic of a process liquid stream includes a cell for isolating a precise volume of the liquid. A sample chamber is over filled and the excess removed from the chamber by using a downwardly exten... | 03/20/1990 |
| 4683748 | Method and apparatus for measuring dynamic fluid flow rate A method and apparatus for measuring a dynamic flow rate of a bodily fluid in which the rate of flow is constantly changing includes an inlet to a chamber where flow accumulates. The accumulating fluid is in communication with the base of a sealed vertica... | 08/04/1987 |
| 4589280 | Fluid flow meter utilizing pressure sensing An improved fluid flow meter for measuring a liquid flow rate is disclosed. It comprises a container having an interior cavity, an inlet opening, a vent opening, a first passageway and a second passageway. The first passageway has an upper opening which i... | 05/20/1986 |
