Such implementations are known to be free from arithmetic coding related patents, on the basis of the age of Martin's paper.

Apple, on the other hand, have been buying a bucket load of solar related patents.

W.G. Allen filed the first related patent in 1909 for hex-driven safety screws.

He says 18 related patents are pending.

Other research groups are expected to apply for related patents.

While over 100 related patents for crawler-type tractor treads had already been issued worldwide, all failed to work in the field.

Northrop was responsible for several hundred weaving related patents.

The company said the precise nature of the technology was proprietary and that Xerox had applied for a number of related patents covering the invention.

Subsequent related patents 830, 852 and 859 were filed by Vladimír Zárybnický in 1962.

A related patent has also been granted in Australia and other patent applications remain pending.