Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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 |
| 6162942 | Method for producing aromatic nitriles A process for preparing aromatic nitriles from corresponding chloroaromatics by reaction with cyanides.... | 12/19/2000 |
| 6140527 | Process for producing butyric ester derivatives This invention has its objects to provide a process for producing a butyric acid ester derivative of the above general formula (2) which is capable of removing various impurity byproducts whose formation cannot be avoided by the prior art technology, part... | 10/31/2000 |
| 5688986 | Processes and catalyst compositions for hydrocyanation of monoolefins Processes for hydrocyanation of nonconjugated acyclic aliphatic monoolefins, monoolefins conjugated to an ester group, or monoolefins conjugated to a nitrile group which utilize a catalyst precursor composition comprising a bidentate phosphite ligand and ... | 11/18/1997 |
| 5597941 | Process for production of 5-amino-3-methylpyrazole The process for producing 5-amino-3-methylpyrazole includes the steps of reacting 2,3-dichloropropene with a cyanogenating agent in the presence of a cuprous salt and water at a pH of 3-8 to obtain at least one intermediate selected from the group consist... | 01/28/1997 |
| 4810815 | Acceleration of diene hydrocyanation Process of polyene hydrocyanation, in particular diene hydrocyanation, wherein a promotionally effective amount of any acid with a pKa above about 2 and below and 14, preferably aryl alcohols such as phenol and cresols, is used.... | 03/07/1989 |
| 4760160 | Preparation of 3-cyano-4-fluorophenol The invention provides a process for the preparation of 4-fluorophenols of formula ##STR1## wherein n is 0 to 3, each R independently represents a halogen atom or an alkyl, alkoxy, cyano or optionally substituted amino group and Z represents a h... | 07/26/1988 |
| 4699991 | Methods of using silacrown ethers as catalysts Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R1 and R2 are organic radicals or hydrogen and n is an integer between 4 and 10 inclusive. Silacrown ethers are p... | 10/13/1987 |
| 4405530 | Process for preparing fluorinated amino-nitriles Certain -(fluoromethyl or difluoromethyl)--aminoacetonitriles are prepared by treating the appropriate -(fluoromethyl or difluoromethyl) ketimine magnesium halide with hydrogen cyanide or with an alkali metal cyanide or ammonium cyani... | 09/20/1983 |
| 4147716 | Preparation of N-substituted carbamates A method of preparing an N-substituted carbamate comprising reacting by heating in sulfolane at a temperature ranging from about 65° C. to about 100° C. (1) an alkali metal cyanate, (2) at least one sulfolane-soluble organic halide of the formula RX whe... | 04/03/1979 |
| 4092344 | Cyclohexenyl resorcinol derivatives Novel 1-hydroxy-3-alkyl-6,7,8,9,10,11-hexahydrodibenz[b,d]oxepins are prepared from cyclohexenyl resorcinol derivatives and are useful as central nervous system depressants.... | 05/30/1978 |
