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 (199 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 H Freeman: Ophthalmic lens with diffractive power. Pilkington P E, F Eugene Davis IV, Mark P Stone, February 10, 1987: US04641934 (140 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 ...


3
Lothar Hanslik, Joachim E Henssge: Knee joint endoprosthesis. Mark P Stone, F Eugene Davis IV, September 13, 1988: US04770663 (130 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 ...


4
Michael H Freeman: Artificial eye lenses. Pilkington P E, F Eugene Davis IV, Mark P Stone, February 10, 1987: US04642112 (122 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 ...


5
Michael H Freeman: Ophthalmic lenses with diffractive power. Pilkington P E, F Eugene Davis IV, Mark P Stone, April 7, 1987: US04655565 (93 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 ...


6
Barbara L Thorne, James F A Traniello: System for termite detection and control. Mark P Stone, July 19, 1994: US05329726 (76 worldwide citation)

A system for termite detection and control is provided by a subterranean bait station having a perforated outer housing permanently implanted in the terrain below ground level, and a perforated cartridge removably received within the housing. The openings in the housing and the cartridge are in alig ...


7
John T Buckley: Expansion system for a medical and surgical dressing. Eric Y Munson, Mark P Stone, April 2, 1991: US05003971 (74 worldwide citation)

A medical and surgical dressing has an expansion system designed to cover, yet be spaced apart from, a healing wound when the dressing is applied. In its expanded configuration, the dressing is bubble shaped. The dressing includes an adhesive material for adhering to the skin of a patient surroundin ...


8
Karl Axel Stjernstrom, Uno S Lof: Drilling tool for percussive and rotary drilling. Uniroc Aktiebolag, Eric Y Munson, Mark P Stone, November 9, 1993: US05259469 (50 worldwide citation)

A drilling tool for percussive and rotary drilling in advance of a trailing casing tube (20) has a reamer (15) pivotally journalled and an eccentric shaft (12) rearwardly of a centric pilot bit (11). The reamer (15) has an eccentric portion (32) carrying axially directed hard metal button inserts (3 ...


9
Stig U Lof: Eccentric drilling tool. Uniroc Aktiebolag, Eric Y Munson, Mark P Stone, October 1, 1991: US05052503 (49 worldwide citation)

An eccentric drilling tool comprises a guide member (10) rotatably centered by the mouth of a casing tube (11) that follows the tool downhole during drilling. A pilot bit (23) on the guide member (10) is provided with axially oriented hard metal pilot button inserts (57, 57.sup.I -57.sup.III) periph ...


10
Keith F Woodruff: Syringe for dispensing multiple dosages. American Cyanamid Company, Mark P Stone, July 12, 1994: US05328486 (46 worldwide citation)

A syringe for administering medicines, pharmaceuticals, and other liquid or semi-liquid materials includes a movable scale which is automatically reset to a zero position after a preselected dosage of material has been discharged from the syringe. The scale is adjustable for selecting subsequent dos ...



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