Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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 |
| 7147373 | Method and system for calibrating a source and detector instrument A system for obtaining coordinate data of a source and detector instrument are described. The system includes a marker assembly having a plurality of markers with a particular geometry, and an energy source for targeting the plurality of markers with energy packets.... | 12/12/2006 |
| 4635369 | Scribing device and method A scribing device and method for generating curves, the term "scribe" encompassing marking a groove on a surface such as with an awl or router, marking a surface with a writing instrument, or cutting into a surface such as with a jigsaw. In one embodiment... | 01/13/1987 |
| 4567662 | Device for drawing ellipses A compass type instrument capable of describing curves, circles and ellipses of infinitely variable angle and size. The central column of the instrument is supported on a foot that aligns the instrument with the center of the desired ellipse and maintains... | 02/04/1986 |
| 4194292 | Drawing instrument A vertical post extends through the center of an enlarged central opening in an annular circular disc. Manually adjustable mechanisms removably secure the disc to the post in such manner as to permit the angle between the plane of the disc and the axis of... | 03/25/1980 |
| 4170824 | Universal compass A compass for drawing geometric figures including ellipses and polygons of different sizes and shapes. The compass includes an upstanding center post having a lower point which supports the compass on the drawing surface. A disc forming a peripheral cam t... | 10/16/1979 |
| 4169315 | Ellipsograph An ellipsograph utilizing dynamic projection method for drawing an ellipsoid comprising a central rod having a circle cap formed on the top portion thereof and a positioning needle secured at the end thereof; a sleeve on said central rod having a pair of ... | 10/02/1979 |
| 4010546 | Ellipse drawing instrument There is provided an ellipse drawing instrument the design of which is based upon the theory of orthogonal projection of a circle comprising a first leg having a pin point to be fixed on the surface to be drawn and a second leg having a drawing tip to be ... | 03/08/1977 |
