Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 5498540 | Method for culturing insect cells in a medium containing fish serum A method for culturing insect cells using fish serum. The method uses serum extracted from the blood of fish to culture insect cells for various purposes. The technique has the key advantages of consistent quality, low cross reactivity, safety from infect... | 03/12/1996 |
| 5484988 | Checkwriting point of sale system A point of sale system designed to read information from a consumer's check, credit card, or manual input with a subsequent debiting of a consumer's account and crediting a merchant's account for the goods or services provided. Point of sale terminals are... | 01/16/1996 |
| 5484524 | Wastewater treatment apparatus A wastewater treatment plant for removal of organic matter, suspended solids and other pollutants comprising a pre-treatment chamber, a biofilm-aeration chamber and a settling chamber. Biofilm grows on biofilm support structure which is stationary and sub... | 01/16/1996 |
| 5481832 | Bridge sand blasting support apparatus A series of large bins which can be raised and lowered on lifts in order to reach a bridge that is to be sand blasted. A skirt is attached to the upper outside edges of the bins. This skirt is raised and attached to the bridge so that the entire work area... | 01/09/1996 |
| 5472247 | Multi-point high security locking mechanism for lottery machines A locking mechanism which provides a number of resistance points, all of which function to impede the opening of a door located on the chassis of a lottery dispensing machine or any other enclosure that must be secured. The locking mechanism includes a ro... | 12/05/1995 |
| 5458788 | Plastic media filter A filter for removal of biochemical oxygen demand and suspended solids utilizing multi-layer filtration media. The filter media includes plastic particles, sand, and garnet and is operated under an automatic control condition. Fine filtering is accomplish... | 10/17/1995 |
| 5449453 | Plastic media filter A filter for removal of biochemical oxygen demand and suspended solids utilizing multi-layer filtration media. The filter media includes plastic particles, sand, and garnet and is operated under an automatic control condition. Fine filtering is accomplish... | 09/12/1995 |
| 5440290 | Proximity detection device for protection of personnel against exposure to hazardous radio frequency radiation A proximity detection device for protection of personnel against exposure to hazardous radio frequency radiation. The device works by detecting the presence of people, either the operator or bystanders, who are in the system antenna's radio frequency radi... | 08/08/1995 |
| 5430925 | Biofilm support media assembly method A method for the assembly of biofilm support structure modules from individual sheets of biofilm support structure. The apparatus consists of a number of dowel rods protruding from a base. Hollow tubes are placed over the rods. Alignment holes are made in... | 07/11/1995 |
| 5426645 | Parallel rule-based data transmission method and apparatus A parallel rule-based data transmission method and apparatus is described comprising multiple computer ports, modems, and multiple data transmission channels. The invention incorporates hardware and software data compression, automatic line selection and ... | 06/20/1995 |
| 5426045 | Method for culturing mammalian cells in a medium containing fish serum A method for culturing mammalian cells using fish serum. The method uses serum extracted from the blood of fishes to culture mammalian cells for various purposes. The technique has the key advantages of 1) freedom from mammalian infectious agents that cou... | 06/20/1995 |
| 5405540 | Chlorination and dechlorination method A chlorination and dechlorination apparatus and method for the treatment of wastewater or other fluid comprising a chlorinator, a contact tank, and a dechlorinator. The contact tank is a vessel having an inlet opening and an outlet opening and is divided ... | 04/11/1995 |
| 5401653 | Method for culturing insect cells in a medium containing fish serum A method for culturing insect cells using fish serum. The method uses serum extracted from the blood of fish to culture insect cells for various purposes. The technique has the key advantages of consistent quality, low cross reactivity, safety from infect... | 03/28/1995 |
| 5399042 | Axial/radial swivel A swivel utilizing multiple angular contact bearings arranged in such a manner as to provide preloading for two-directional axial and radial thrust stability. This bearing arrangement of angular contact ball bearings applied to swivels adds capabilities o... | 03/21/1995 |
| 5369702 | Distributed cryptographic object method A system for increasing the security of a computer system, while giving an individual user a large amount of flexibility and power. To give users the most power and flexibility, a standard object that has the capability to embed objects is used. To allow ... | 11/29/1994 |
| 5347611 | Apparatus and method for transparent tone passing over narrowband digital channels A method of passing tones transparently over narrowband channels without having to detect the tones at the transmit side is described. This method requires neither separate handling of tones for the transmission purpose, nor prior knowledge of the charact... | 09/13/1994 |
| 5299227 | Individual beacon identification system A compact beacon-detector type IFF system to be carried by individual soldiers. The system consists of a beacon and a special purpose detector. The beacon is a small, light-weight, battery powered device that is worn on the soldier's web gear. The detecto... | 03/29/1994 |
