William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 5174665 | Ink-supply system for a dot matrix printer An ink-supply system for a dot matrix printer including an ink-supply tank having an ink-supply delivery port and an ink absorbing member having at least two separate porous members disposed as stacked layers, one of the porous members which is closer to ... | 12/29/1992 |
| 4749291 | Inking system for wire dot matrix printer An inking system comprising an ink vessel removably mounted on a nose portion of a wire dot matrix printer. The ink vessel is stationarily connected to a capillary path member for transferring ink reserved within the ink vessel to the rear surface of a be... | 06/07/1988 |
| 4491433 | Venting and ink recycling device The ink supply container disclosed herein is adapted for use with a moving carriage printer and controls foaming of a liquid ink in the container by providing, at the top of the container, a well having a sloping floor. Foamed ink is communicated to the w... | 01/01/1985 |
| 4400102 | Multi-color print head A dot matrix impact printer for printing a plurality of colors substantially simultaneously. A print head is comprised of three spaced substantially parallel columns of print wires, each column containing an equal number of print wires. Separate independe... | 08/23/1983 |
| 4279519 | Dot matrix printing device employing novel image transfer technique for printing on single ply or multiple ply print receiving media A dot matrix impact printer having print wires reciprocating within a print head. A bearing guides printing tips in the nose of the print head. Liquid printing material stored within a container adjacent to the print head is delivered by a wick from the c... | 07/21/1981 |
| 4194846 | Dot matrix printing device employing a novel image transfer technique to print on single or multiple ply print receiving materials A printer having at least one reciprocally mounted printing member controlled to impact against a printing surface by selective energization of an associated printing driving member. The forward end of the member is guided by a bearing. Ink from a supply ... | 03/25/1980 |