Bizarre Patents
A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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 |
| 6272225 | Key recovery condition encryption and decryption apparatuses A key recovery condition encryption apparatus includes a hashing unit, a first concatenating unit, and a condition information encryption unit. The hashing unit calculates a hash value on the basis of a hash function using a key recovery information text ... | 08/07/2001 |
| 6266421 | Key recovery system and key recovery method The present invention has an object to overcome problems of a key recovery system using a conventional KRF system and to achieve efficient operation of the overall key recovery system. A key recovery system of the present invention includes check units 12... | 07/24/2001 |
| 6185308 | Key recovery system A key recovery information distribution device is provided between a recoverer device and a key recovery device, recovers a data key for the recoverer device, and reduces the load of the recoverer device. Data is encrypted using the data key and stored wi... | 02/06/2001 |
| 6169803 | Encryption key processing system to be incorporated into data recovery system or key setting system for generating encryption key An encryption key processing system includes a user terminal system which uses a key and a sub-system for holding information regarding the user terminal system, the sub-system generating predetermined public information, secret information corresponding ... | 01/02/2001 |
| 5689567 | Electronic signature method and apparatus Electronic signature apparatus and method provide an electronic signature that can be created only by a signer, but cannot be used for other than the signature object document to be processed, and that can be verified and authenticated as an image. Since ... | 11/18/1997 |
| 5661805 | Signature verification apparatus capable of obtaining information required for a document recipient by using an apparatus's verification key alone In apparatus for performing signature verification for an input document on which at least one digital signature is put by at least one signer assigned with a signer's user ID code, an inputting section inputs the signature document. A user ID identifying... | 08/26/1997 |
| 5077401 | Benzo-fused cyclic compounds Herbicidal benzo-fused cyclic compounds of the formula ##STR1## wherein Q is ##STR2## Y is O or S, W is ##STR3## T is O, S, --NH-- or ##STR4## and R4 may represent, together with T, chlorine, Z is O or S, X is hydrogen... | 12/31/1991 |
| 5034051 | Heterocyclic compounds Herbicidal compounds of the formula ##STR1## in which X denotes an oxygen atom or sulfur atom, Y denotes a hydrogen atom or halogen atom, Z denotes an oxygen atom or sulfur atom, n denotes 0 to 1, and R denotes hydrogen, an alkyl group having 1 to 6 carbon ato... | 07/23/1991 |
| 5017213 | 1-phenylpyrroles Herbicidal 1-phenylpyrroles of the formula ##STR1## wherein each R1 represents methyl or together form a tetramethylene group, R2 represents hydrogen, C1-6 alkyl, cyclopropylmethyl, C1-4 alkoxy-C1-2 | 05/21/1991 |
| 5007952 | Herbicidal novel benzothiazolonyl pyrroles Herbicidally active pyrroles of the formula ##STR1## wherein R1 represents C1-4 alkyl, or one R1 together with the other R1 forms tetramethylene or butenylene, X represents hydrogen or halogen, Y represents O or... | 04/16/1991 |
| 4971619 | Benzothiazolone Herbicidal benzothiazolones of the formula ##STR1## wherein X represents hydrogen or halogen, R1 represents hydrogen, alkyl, various organic radicals, ##STR2## in which R2, R4, R5 and R6 eac... | 11/20/1990 |
| 4902335 | Benzo-fused cyclic compounds Herbicidal benzo-fused cyclic compounds of the formula ##STR1## wherein Q is ##STR2## Y is O or S, W is ##STR3## T is O, S, --NH-- or ##STR4## and R4 may represent, together with T, chlorine, Z is O or S, X is hydrogen... | 02/20/1990 |
| 4804394 | Benzoxazines and use as herbicides Novel benzoxazines of the formula (I) ##STR1## wherein X is hydrogen or halogen, R1 is hydrogen or C1 -C2 -alkyl, R2 is cyano, trimethylsilyl, trimethylsilylmethoxycarbonyl, C1 -C4 -alkylth... | 02/14/1989 |
