...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
| Number | Title | Issue Date |
| 5529791 | Extended release form of diltiazem An extended-release galenical form of Diltiazem or a pharmaceutically acceptable salt thereof, which comprises beads containing said Diltiazem or a pharmaceutically acceptable salt thereof as an active ingredient and a wetting agent, said beads being coat... | 06/25/1996 |
| 5288505 | Extended release form of diltiazem An extended-release galenical form of Diltiazem or a pharmaceutically acceptable salt thereof, which comprises beads containing said Diltiazem or a pharmaceutically acceptable salt thereof as an active ingredient and a wetting agent, said beads being coat... | 02/22/1994 |
| 5036100 | Pharmaceutical method and preparation containing indomethacin This invention relates to a liquid pharmaceutical preparation for topical use on the skin of patients, said preparation containing indomethacin as active ingredient and dimethylisosorbide and isopropanol as excipients. The preparation according to the inventio... | 07/30/1991 |