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 |
| 4076813 | Derivatives of 3-oxomethyl-2-(1-nitro-2-oxoethylidene)-tetrahydro-2H-1,3-thiazines as insecticides Novel compounds defined in the title, useful as insecticides.... | 02/28/1978 |
| 4066758 | N2 -naphthalenesulfonyl-L-arginine derivatives, and the pharmaceutically acceptable acid addition salts thereof N2 -naphthalenesulfonyl-L-arginine esters and amides having the formula ##STR1## or the acid addition salts thereof with a pharmaceutically acceptable acid, wherein R is selected from the class consisting of (1) alkoxy, alkenyloxy, cy... | 01/03/1978 |
| 4066759 | N2 -naphthalenesulfonyl-L-arginine derivatives, and the pharmaceutically acceptable acid addition salts thereof N2 -naphthalenesulfonyl-L-arginine esters and amides having the formula ##STR1## or the acid addition salts thereof with a pharmaceutically acceptable acid, wherein R is selected from the class consisting of (1) alkoxy, alkenyloxy, cy... | 01/03/1978 |
| 4065560 | Tetrahydro-2-(nitromethylene)-2H-1,3-thiazine insect control agents Novel insecticidal tetrahydro-2-(nitromethylene)-2H-1,3-thiazines.... | 12/27/1977 |
| 4061749 | 5,6-Dihydro-4H-1,3-thiazine-2-carboxaldehyde oxime useful as insecticides 5,6-Dihydro-4H-1,3-thiazine-2-carboxaldehyde oxime useful as an insecticide.... | 12/06/1977 |
| 4045559 | Use as insecticides of esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids Use as insecticides of esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids.... | 08/30/1977 |
| 4044128 | Insecticidal sulfonium salts Novel insecticidal sulfonium salts of 2-(alkylthio)ethyl esters of alpha-nitro-alpha(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids.... | 08/23/1977 |
| 4034091 | N-(Arylsulfonyl)-2-nitro-2-(tetrahydro-2H-1,3-thiazin-2 -ylidene)acetamides Novel compounds, identified in the title, useful as insecticides.... | 07/05/1977 |
| 4024254 | S-Esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)ethanethioic acid Novel insecticidal S-esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)ethanethioic acid.... | 05/17/1977 |
| 4015001 | Control of insects by nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)methyl aldehydes and ketones Insects are controlled by nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)methyl aldehydes and ketones.... | 03/29/1977 |
| 4013766 | N-(nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetyl)benzamides Novel compounds, identified in the title, useful as insecticides.... | 03/22/1977 |
| 3995035 | 6-Amino-2-lower-alkyl-4-nitropyridine N-oxide compositions and coccidiostat process Certain new 6-amino-2-lower-alkyl-4-nitropyridine N-oxides, particularly 6-amino-4-nitro-2-picoline N-oxide, have been found to be effective coccidiostats. The amino group can be varied and acid addition and quaternary ammonium salts are included.... | 11/30/1976 |
| 3966929 | Process for controlling bacteria with tetrahydro-1,3-thiazinium salts Tetrahydro-1,3-thiazinium salts of the formula ##EQU1## where X is an anion, R2 is hydrogen or hydroxyl, and R and R1 are alkyl, hydroxyl substituted alkyl, or a heterocyclic ring, are prepared by reacting a secondary amine with... | 06/29/1976 |