...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7349532 | Picture and video message center system A message originator sends a picture or video message to a message center along with caller identifying information. The message is stored in a memory and transmitted to a wireless picture phone, PDA or portable computing device, or stored at the message center in a... | 03/25/2008 |
| 7310416 | Method and apparatus for improved personal communication devices and systems A system for adding or updating contact data in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown. Contact data associated with actual or potential communicants may be entered into a database in the wireless comm... | 12/18/2007 |
| 7305076 | Method and apparatus for improved paging receiver and system A wireless information communication system and method, such as a paging network, that provides caller identification information transmitted from the public switched telephone network to a pager, PDA (Personal Digital Assistant), a portable computing device, or per... | 12/04/2007 |
| 7286658 | Method and apparatus for improved personal communication devices and systems A method for use in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown in which Caller ID data originating from the public switched telephone network or other caller identifying data is received in a paging signal... | 10/23/2007 |
| 7266186 | Method and apparatus for improved paging receiver and system Contact data in a phonebook database for a personal communication device are remotely updateable from, or transferable between, a computer system using a wireless radio frequency connection. New contact data, and changes or updates to existing contact data, are inpu... | 09/04/2007 |
| 7257210 | Picture phone with caller id Pictures are transmitted to a wireless picture phone with caller ID from a message originator and used by the message recipient to identify who is to sending the picture. In one embodiment the pictures are sent to a message center along with the caller ID of the mes... | 08/14/2007 |
| 7254223 | Method and apparatus for improved personal communication devices and systems Contact data in a database for a wireless personal communication device are remotely updatable from, or transferable between, a computer system using a radio frequency connection. New contact data, and changes or updates to existing contact data, are input at the co... | 08/07/2007 |
| 7251318 | Method and apparatus for improved personal communication devices and systems An apparatus and method provide a database in a pager that contains menus that may be displayed on a pager display. A paging service sends a page including an identification, retrieves a menu from the pager database and displays the menu. The pager responds to the p... | 07/31/2007 |
| 4963702 | Digitizer pad featuring spacial definition of a pressure contact area A digitizer pad apparatus includes at least one digitizer ply where each digitizer ply has a first and a second resistor strip, each with a resistance gradient along its length, oriented in spaced apart relationship. A plurality of conductor traces are in... | 10/16/1990 |