1
Michael H Freeman: Multifocal contact lenses utilizing diffraction and refraction. Pilkington P E, F Eugene Davis IV, Mark P Stone, January 20, 1987: US04637697 (213 worldwide citation)

A bifocal contact lens has diffractive power added to the basic refractive power provided by the material of the lens and the basic curvature of its front and rear surfaces. The diffractive power arises from concentric zones, each providing an asymmetric retardation of light across the zone width to ...


2
Michael J Tuck: Display system having wide field of view. Pilkington P E, F Eugene Davis IV, September 20, 1988: US04772942 (166 worldwide citation)

A display system which can be used inside a vehicle such as a military tank to monitor at least part of the surrounding panorama. The display system has a display generator and an optical system for viewing the display. Electronic means are provided to predistort the display to compensate for distor ...


3
Michael H Freeman: Ophthalmic lens with diffractive power. Pilkington P E, F Eugene Davis IV, Mark P Stone, February 10, 1987: US04641934 (145 worldwide citation)

An ophthalmic lens incorporates a transmission hologram which has negative diffractive power and introduces positive longitudinal chromatic aberration to add to the natural longitudinal chromatic aberration of the human eye, thereby reducing the need to accommodate. The lens also has refractive powe ...


4
Lothar Hanslik, Joachim E Henssge: Knee joint endoprosthesis. Mark P Stone, F Eugene Davis IV, September 13, 1988: US04770663 (140 worldwide citation)

The invention relates to knee joint endoprosthesis consisting of a femur part provided with two skid surfaces leaving a free space between each other, said surfaces being connected with each other in front and having their curvature increasing from the front towards the rear and being curved also on ...


5
Michael H Freeman: Artificial eye lenses. Pilkington P E, F Eugene Davis IV, Mark P Stone, February 10, 1987: US04642112 (134 worldwide citation)

A contact lens has a transmission hologram which provides diffractive power on a wavelength and/or amplitude selective basis whereby light from near and distant objects can be focussed on the retina of a presbyopic wearer. Similarly an implant lens can have a transmission hologram to correct for non ...


6
Michael H Freeman: Ophthalmic lenses with diffractive power. Pilkington P E, F Eugene Davis IV, Mark P Stone, April 7, 1987: US04655565 (102 worldwide citation)

A contact or spectacle or implant lens has positive diffractive power which introduces negative longitudinal chromatic aberration that more than counteracts, and is preferably greater than twice, the natural positive longitudinal chromatic aberration of the eye. The residual negative longitudinal ch ...


7
David W Swift: Head-up displays. Pilkington P E, F Eugene Davis IV, August 16, 1983: US04398799 (72 worldwide citation)

In a head-up display system by which visual information from a display is superimposed by means of a combiner on a pilot's view of the outside scene, the pilot's view is recorded by a head mounted camera to which light from the outside scene and superimposed display is reflected by a head-mounted mi ...


8
Lawrence W Hill: Spread spectrum-time diversity communications systems and transceivers for multidrop area networks. ComSource Systems, F Eugene Davis IV, December 1, 1992: US05168510 (65 worldwide citation)

Messages are transmitted on pairs of frequencies that are orthogonal, that is the frequencies have no least common denominator (are prime to each other). A message is transmitted on the first of the pair of frequencies and, simultaneously, its complement is transmitted on the second of said pair of ...


9
Lawrence W Hill: Frequency hopping time-diversity communications systems and transceivers for local area networks. Cyplex Corporation, F Eugene Davis IV, September 5, 1995: US05448593 (61 worldwide citation)

A system utilizing adaptive frequency-hopped spread spectrum modulation to communicate over AC power lines and other noisy communications channels is described. The system employs a modulation structure in which individual packets of data are transmitted with FSK modulation using two frequencies cho ...


10
David G McCarthy: Modular seven wire electrical connector system. Electri Cable Assemblies, F Eugene Davis IV, October 4, 1988: US04775328 (57 worldwide citation)

The present invention provides a modular electrical power block assembly including a plurality of ports for receiving individual modular circuits. The power block assembly includes seven separate electrical conductors, three of which are hot, two of which are neutral and two of which are ground, for ...