...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 7186756 | Steroid derivatives and use thereof as medicaments Steroids of the formula wherein R is defined as in the application capable of increasing the synthesis of collagen. ... | 03/06/2007 |
| 7138520 | Coordination complexes having tethered therapeutic agents and/or targeting moieties, and methods of making and using the same In part, the present invention is directed to coordination complexes comprising a therapeutic agent. In one aspect, the subject compositions comprise a platinum metal center and a covalently attached therapeutic agent. ... | 11/21/2006 |
| 5712416 | Preparation of benzoquinones by oxidation of phenols Process for preparing benzoquinones by oxidation of phenols in the presence of a diluent and of an oxygen-transferring catalyst which contains a heavy metal ion bound in a complex, wherein oxygen, hydrogen peroxide, a compound which liberates hydrogen per... | 01/27/1998 |
| 4288630 | 1-Hydroxymethyl-11,15-dihydroxy-prosten-1-ol-derivatives Prostaglandin analogs are disclosed that have the -chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C1 to C4 alkanoyl or optionally substituted benzoyl, the substituen... | 09/08/1981 |
| 4219489 | Synthesis of steroids Method and compounds are provided for use in the synthesis of steroids wherein a polyolefin is provided having an initiating group having a chalcogen atom in juxtaposition to a double bond, so as to be capable of bond formation to close to form a ring and... | 08/26/1980 |
| 4130665 | A-norandrostane derivatives Therapeutically useful A-nor-androsta-3(5),16-dien-2-one derivatives of the general formula: ##STR1## wherein R1 and R2 each represent a hydrogen atom or a methyl group, process for their preparation by dehydrating in the 16-17 ... | 12/19/1978 |
| 4129599 | A-Norsteroids Method is provided for cyclization of polyunsaturated substituted acylic or monocarbocyclic initiator group containing compound having an endocyclic double bond with a chalcogen atom in the allylic position of the initiator group and having at least two s... | 12/12/1978 |
| 4064185 | Olefinically unsaturated substituents at C-11 of steroid cyclization precursors Compositions are provided as well as methods for preparing the compositions which serve as cyclization precursors for the preparation of C-11 alkenyl substituted steroids and nor-steroids. The alkenyl group may be converted after cyclization to a variety ... | 12/20/1977 |
| 4055603 | Alkinyl terminating groups in biogenetic-like cyclizations to steroids Polyenine compounds are provided having the naturally occurring geometry and a group which in the presence of acid initiates a carbocation cyclization to a steroid or A-nor-steroid structure, particularly the pregnane parent structure. The compounds are f... | 10/25/1977 |