Abstracts of Some Software Patents

• 05297249 : Hypermedia Linking
• 4891770 : Variably sized block diagrams
• 4897804 : Line format area and data display area
• 4898483 : Typewriter with computer
• 4899292 : Retrieve text AND graphics
• 4891771 : Column balancing control
• 4953105 : Merge print for variable data lengths
• 4907282 : Splines for bitmaps and pixmaps
• 4896291 : Value menu as GUI tool
• 4899136 : UI display of metaphoric objects
• 4928247 : Asynchronous traversal of graphics data objects
• 4891783 : Data terminal device
• 4891784 : Tape drive reads/writes large blocks between gaps
• 4894796 : Switch with programmable display
• 4896262 : Emulator for converting magnetic signal into semiconductor signal
• 4896289 : Several computers connected to one typesetter
• 4891785 : Application control of file transfers over network
• 4896257 : Use a second computer for virtual addressing
• 4901231 : Extended process for MP system
• 4891752 : Memory space addressing using DMA channels
• 4891751: Massively parallel vector processing computer
• 49550666 : Compressing and decompressing text files
• 5187468 : Pointing device with adjustable clamp attachable to a keyboard
• 4992934: RISC simulators

Unofficial texts of software patents

• Bitmap overlay, as typed by Dennis Ritchie
• Converting byte order : call for prior art, July 1991
• Compiler patents as of 1991
• Compression : Sperry's 1985 application.
• RSA : brief synopsis of four crypto patents
• setuid : Bell has a patent on setuid!

Lists of software patents

• Microsoft patents between Jan 1990 - Nov 1993: list
• Microsoft patents between Jan 1990 - Nov 1993: text
• Titles to 2700 Software Patents Issued in 1992 and 1993
• Patents granted 1990-1992, by company
• March 19th, 1991 : patents granted in one week! This is the week the five millionth patent was granted.