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 |
| 7024736 | Apparatus and method for manufacture of multilayer metal products Apparatus for manufacturing multi-layer metal feedstock material for stamping shaped parts eliminates the need for rolls of metal at the stamping site. Multilayer metal feedstock material is assembled from multiple rolls of metal stock, then folded in a zig zag fash... | 04/11/2006 |
| 6923104 | Tensive cutting assembly A tensive cutting assembly includes a tensionable cutting member formed of a strip of material, typically metal, which is formed having a serpentine configuration. The tensionable cutting member is removably mounted on a tensive cutting head. The tensive cutting hea... | 08/02/2005 |
| 6823571 | Apparatus and method for manufacture of multilayer metal products Apparatus for manufacturing multi-layer metal feedstock material for stamping shaped parts eliminates the need for rolls of metal at the stamping site. Multilayer metal feedstock material is assembled from multiple rolls of metal stock, then folded in a zig zag fash... | 11/30/2004 |
| 5658623 | Parting compound for the hot forming of encased metal parts and a process for manufacturing the parting compound A parting compound in the form of a monolithic component (3a, 3b) is used in accordance with the invention for the hot forming of encased metal parts (2). This component consists of powder particles strengthened by sintering. The parting compound material... | 08/19/1997 |
| 5127146 | Method for production of thin sections of reactive metals A method of forming thin metal sections of reactive metals which prevents high-temperature accelerated corrosion during hot working. The reactive metal section is placed in a non-reactive metal frame. Two non-reactive metal sections are machined to form d... | 07/07/1992 |
| 3991450 | Method of separating apertured shadow mask flats after annealing A method of separating apertured shadow mask flats after annealing in which a stack of thin flats is passed through a roller leveler, with the rollers set apart by a dimension slightly less than the thickness of the stack.... | 11/16/1976 |