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 |
| 7375432 | Via attached to a bond pad utilizing a tapered interconnect An interconnect includes a pad and at least two vias coupled to the pad. In one embodiment, the pad has five substantially straight edges, one via directly coupled to the pad by being formed substantially beneath the pad, and one via coupled to one of the five subst... | 05/20/2008 |
| 4079291 | Electronic lighting device An electric arc lighting device for igniting inflammable products. The device comprises a direct current supply source and an oscillating unit constituted of a first inductance and an amplifying circuit connected in parallel with the supply source. The un... | 03/14/1978 |