| Patents for G09B 21 - Teaching, or communicating with, the blind, deaf or mute (3,530) |
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| 09/10/1991 | US5047953 Augmentive communications system and method |
| 09/10/1991 | US5047952 Communication system for deaf, deaf-blind, or non-vocal individuals using instrumented glove |
| 08/14/1991 | EP0440641A1 Conveying information through motion sequences |
| 08/08/1991 | WO1991011769A1 Portable electronic reading and reference device |
| 07/30/1991 | US5035242 Method and apparatus for sound responsive tactile stimulation of deaf individuals |
| 07/26/1991 | CA2013073A1 Street crossing signal |
| 07/23/1991 | US5033964 Book for joint reading by a visually impaired person and a sighted person |
| 07/23/1991 | CA2008300A1 Portable electronic reading and reference device |
| 07/16/1991 | US5032836 Guiding device for visually handicapped person |
| 07/16/1991 | US5032083 Computerized vocational task guidance system |
| 07/03/1991 | CN2080030U Blind writing device |
| 07/03/1991 | CN1052741A Apparatus for classifying banknotes and like |
| 07/02/1991 | US5029216 Visual aid for the hearing impaired |
| 06/27/1991 | WO1991009380A1 Device for classifying bank notes and the like |
| 05/14/1991 | US5016003 Environmental control system for the handicapped |
| 05/14/1991 | US5015179 Speech monitor |
| 04/30/1991 | US5010774 Distribution type tactile sensor |
| 04/23/1991 | CA1283286C Stuffed bear as teaching aid |
| 04/17/1991 | EP0423023A1 Method and device for dynamically locating the position of a word and summarizing during the reading of a field for an apparatus with braille display or synthesized speech output |
| 03/26/1991 | CA1282171C Banknote denomination reader system for the blind |
| 03/21/1991 | WO1991003782A1 One-handed keyboard |
| 03/20/1991 | EP0417388A2 Body vibrator |
| 03/14/1991 | DE3929275C1 Tactile display unit for blind people - has groups of projecting pegs forming Braille symbols |
| 02/28/1991 | DE3927797A1 Im-ohr-hoergeraet mit schall-ausgleichskanal In-ear hearing aid with noise-compensating channel |
| 02/24/1991 | WO1991003139A1 Intra-aural hearing aid with sound balancing channel |
| 02/24/1991 | CA2063806A1 In-the-ear hearing aid with sound compensating channel |
| 02/20/1991 | EP0181905B1 Tactile reading device |
| 02/13/1991 | CN2071362U Language teaching machine for deal-mute |
| 02/12/1991 | US4992865 Teletext receiving device for the blind |
| 02/05/1991 | US4991219 Sound simulation chamber |
| 02/05/1991 | US4991126 Electronic-automatic orientation device for walkers and the blind |
| 01/31/1991 | DE3923967A1 Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix |
| 01/30/1991 | EP0410045A1 Image audio transformation system, particularly as a visual aid for the blind |
| 01/23/1991 | EP0271539A4 Mass production auditory canal hearing aid |
| 01/15/1991 | US4985692 Word processor work station with a braille reading line |
| 01/01/1991 | US4982432 Electrotactile vocoder |
| 12/25/1990 | US4979749 Multi-use number board |
| 12/18/1990 | US4979094 For controlling electrically powered domestic equipment in a dwelling |
| 12/06/1990 | DE3917824A1 Audio training device for improving hearing ability - uses narrow band spectrum obtained from natural sound to stimulate nerve connections |
| 11/27/1990 | US4973149 Eye movement detector |
| 11/06/1990 | US4969096 Method for selecting communication devices for non-speaking patients |
| 10/23/1990 | US4965440 Information reproducing apparatus |
| 10/16/1990 | US4964167 Apparatus for generating synthesized voice from text |
| 10/03/1990 | EP0390169A1 Image information processing apparatus |
| 09/13/1990 | DE3907907A1 Method and device for locating and identifying objects for blind persons |
| 09/04/1990 | US4954083 For a handicapped patient |
| 08/01/1990 | EP0379795A1 Container system for dispensing pharmaceutical prescriptions to visually or medically impaired users |
| 07/19/1990 | DE3901023A1 Reading device for blind or visually impaired persons with a scanner reading normal script |
| 06/28/1990 | WO1990007249A1 Tongue activated communications controller |
| 06/13/1990 | EP0372259A2 Communication device between the blind or visually handicapped and a computer |
| 06/13/1990 | CN1043026A New technology for translating articles in chinese into standard chinese brailles |
| 05/31/1990 | DE3942093A1 Electronic orientation aid for blind - provides stereo acoustic signal corresponding to detected frequency characteristic or frequency spectrum |
| 04/17/1990 | CA1267781A1 Device for tactile reader |
| 04/11/1990 | EP0256016B1 Device for sending and receiving a message |
| 04/10/1990 | US4915632 Communication aid with sequential lighting |
| 04/10/1990 | EP0271499A4 Audio-tactile pedestrian push button signalling system. |
| 03/29/1990 | DE3824665A1 Device for the representation of braille |
| 03/13/1990 | US4908845 Audio/telephone communication system for verbally handicapped |
| 03/06/1990 | US4907136 Echo location system for vision-impaired persons |
| 02/28/1990 | EP0355258A2 Communication and environment control apparatus |
| 02/27/1990 | US4905001 Hand-held finger movement actuated communication devices and systems employing such devices |
| 02/06/1990 | US4898536 Device for displaying graphic information |
| 01/25/1990 | DE3811406A1 Device for the presentation of Braille |
| 01/23/1990 | US4895519 Audio-frequency converter apparatus, installation including said apparatus for treating subjects suffering from audio-phonatory and auditive-verbal disorders, and a method of using such an installation |
| 01/23/1990 | US4895257 Container system for dispensing pharmaceutical prescription to visually or medically impaired users |
| 01/16/1990 | US4893540 Display apparatus for visually impaired persons |
| 01/04/1990 | DE3920386A1 Tactile display screen |
| 12/14/1989 | WO1989012290A1 Conveying information through motion sequences |
| 11/30/1989 | WO1989011712A1 Tactile braille output device |
| 11/21/1989 | US4881900 Sensing display apparatus of image pattern |
| 11/14/1989 | US4880384 Braille teaching apparatus |
| 11/09/1989 | DE3834442C1 Device for multi-channel transmission of information via the sense of touch |
| 11/08/1989 | EP0340772A1 Polyester film useful as a support for braille printing |
| 11/07/1989 | US4879210 Method and apparatus for teaching signing |
| 11/07/1989 | US4878843 Process and apparatus for conveying information through motion sequences |
| 10/25/1989 | EP0338997A2 Computer controlled information broadcasting system for aiding blind persons in town walking |
| 10/19/1989 | DE3910034A1 Reading device for image pattern information |
| 10/18/1989 | EP0337363A2 Display panel for tactile informations |
| 10/17/1989 | US4875185 Workstation for a vision-impaired user with interface for selectively feeding display data from a bus or a connected computer |
| 10/03/1989 | US4871992 Tactile display apparatus |
| 09/27/1989 | EP0334743A1 Tactile effect communication terminal |
| 09/26/1989 | US4870688 Mass production auditory canal hearing aid |
| 09/08/1989 | WO1989008302A1 Tactile imaging paper |
| 08/22/1989 | US4859094 Braille printing plate |
| 08/17/1989 | DE3803536A1 Device for the automatic sensory reception of encoded information items for a human being |
| 08/16/1989 | EP0328149A2 Device for the representation of braille writing |
| 08/08/1989 | US4854880 Wardrobe color coordination kit |
| 08/02/1989 | EP0326129A1 Guiding device for visually handicapped person |
| 08/01/1989 | US4853674 Signalling apparatus for hearing impaired persons |
| 07/27/1989 | WO1989006848A1 Electronic vibrational display |
| 07/25/1989 | US4851836 Audio-tactile pedestrian push button signalling system |
| 07/11/1989 | US4846687 Sign language blocks |
| 06/29/1989 | WO1989006028A1 Display apparatus for visually impaired persons |
| 06/28/1989 | EP0108106B1 Data entry device |
| 06/27/1989 | US4843568 Real time perception of and response to the actions of an unencumbered participant/user |
| 06/21/1989 | EP0320886A1 Pattern reading apparatus |
| 06/20/1989 | US4840567 Braille encoding method and display system |
| 06/13/1989 | US4838791 Magnetic tracking aid for a hand held scanner |
| 06/07/1989 | EP0318610A1 Braille printing plate |
| 06/06/1989 | US4836784 Unit for display of information on a reading device for the blind |