2014 sounds plausible.
ECS were introduced in 1990, so no later than 2010 there.
AGA introduced in 1992, so no later than 2012.
To the first two posters, the length of patent is known (20y). The question is when the patent is filed.
Did a check now,
patft.uspto.gov on Commodore-Amiga but it only shows a few patents:
Patent Title
1 5,103,499 Beam synchronized coprocessor
2 4,954,949 Universal connector device for bus networks in host computer/co-processor computer system
3 4,874,164 Personal computer apparatus for block transfer of bit-mapped image data
4 4,829,473 Peripheral control circuitry for personal computer
5 4,780,844 Data input circuit with digital phase locked loop
6 4,777,621 Video game and personal computer
7 4,772,882 Cursor controller user interface system
Filing dates between 1986-07-18 to 1989-10-16. The last one should expire this years autumn.
But did Commodore-Amiga only file 7 patents??
A
search for "Commodore Business Machines" gives:
Patent Title
1 5,088,035 System for accelerating execution of program instructions by a microprocessor
2 4,989,174 Fast gate and adder for microprocessor ALU
3 4,886,941 Circuit for interfacing mouse input device to computer system
4 4,851,826 Computer video demultiplexer
5 4,813,671 Raster monitor for video game displays
6 4,761,736 Memory management unit for addressing an expanded memory in groups of non-contiguous blocks
7 4,686,487 Current mirror amplifier
8 4,677,890 Sound interface circuit
9 4,599,528 Self booting logical or circuit
10 4,572,506 Raster line comparator circuit for video game
11 4,570,085 Self booting logical AND circuit
12 4,569,019 Video sound and system control circuit
13 4,562,365 Clocked self booting logical "EXCLUSIVE OR" circuit
14 4,561,659 Display logic circuit for multiple object priority
15 D281,503 Printer
16 4,551,682 Digital sine-cosine generator
17 D280,322 Videogame cartridge case
Filing dates between 1983-04-04 to 1988-12-09.
Parameters to use for searchingCould "Commodore" hide under any other name?, or possible individual inventor?
