Bizarre Patents
A kissing shield comprised of a thin, flexible membrane and a frame or holder.
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 |
| 5613896 | Automatic bowling ball resurfacing machine A machine for refinishing the surface of a bowling to improve the roundness of the bowling ball with the machine including individual bowling ball resurfacing units each having a cone-shaped cup resiliently supported on the bowling ball resurfacing unit w... | 03/25/1997 |
| 5109127 | Nonionic surface active agent A nonionic surface active agent comprising a fatty acid ester of a hexose sugar or an alkyl glycoside thereof, wherein the content of monoester is from 93 to 99.9% by weight, the content of diester is from 0.1 to 7% by weight and the content of tri- and h... | 04/28/1992 |
| 4694527 | Mask washing apparatus for production of integrated circuit This invention relates to a mask (reticle) washing apparatus for use in the production of semiconductor integrated circuits (IC), and in particular, to cleaning a mask without the use of a strong oxidizing agent or a strong alkaline agent. The mask washin... | 09/22/1987 |
