Thermoplastic lens blocking material

Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

428217, 4284248, 428426, 451390, 351159, B32B 702

Patent

active

058857001

ABSTRACT:
The present invention provides thermoplastic ophthalmic lens blocking compositions that have many advantages over traditional metal alloy materials. Preferred compositions comprise a blend of (i) a hydrocarbon resin, preferably an aromatic hydrocarbon resin; (ii) a side chain crystallizable hydrocarbon polymer or copolymer; and (iii) optionally an modifier or mixture of modifiers, preferably straight chain alcohols. The composition may also comprise one or more modifiers, fillers or heat absorbing materials. In one embodiment, the composition is used to fill the cavity between a preformed lens block and a lens. In another embodiment the composition is used to form a lens block. Methods of holding a lens blank are taught. Tapes that provide a receptive surface against which the composition may be adhered are disclosed.

REFERENCES:
patent: Re24906 (1960-12-01), Ulrich
patent: 3382202 (1968-05-01), Forrester et al.
patent: 3468366 (1969-09-01), Suddarth
patent: 3512310 (1970-05-01), Rudd et al.
patent: 3651014 (1972-03-01), Witsiepe
patent: 3786116 (1974-01-01), Milkovich et al.
patent: 3911185 (1975-10-01), Wright, Jr.
patent: 3914489 (1975-10-01), Smedberg
patent: 3926878 (1975-12-01), Shimizu et al.
patent: 3944695 (1976-03-01), Kosaka et al.
patent: 3996701 (1976-12-01), Ramirez et al.
patent: 4025694 (1977-05-01), Pletcher
patent: 4059715 (1977-11-01), Pletcher
patent: 4066600 (1978-01-01), Pletcher et al.
patent: 4173506 (1979-11-01), Pletcher
patent: 4182829 (1980-01-01), Walkowiak et al.
patent: 4235761 (1980-11-01), Koenig
patent: 4280939 (1981-07-01), Johnson
patent: 4287013 (1981-09-01), Ronning
patent: 4327013 (1982-04-01), Peters
patent: 4328060 (1982-05-01), Tusinski et al.
patent: 4352749 (1982-10-01), Nakabayashi et al.
patent: 4361538 (1982-11-01), Dicoi et al.
patent: 4404299 (1983-09-01), Decroix
patent: 4430479 (1984-02-01), Merton et al.
patent: 4552906 (1985-11-01), Podszun et al.
patent: 4569342 (1986-02-01), von Nostitz
patent: 4659786 (1987-04-01), Kawakami et al.
patent: 4678836 (1987-07-01), McKinney et al.
patent: 4737559 (1988-04-01), Kellen et al.
patent: 4740245 (1988-04-01), Futami et al.
patent: 4768951 (1988-09-01), Abiru et al.
patent: 4833179 (1989-05-01), Young et al.
patent: 4847137 (1989-07-01), Kellen et al.
patent: 4952650 (1990-08-01), Young et al.
patent: 5026278 (1991-06-01), Oxman et al.
patent: 5040976 (1991-08-01), Ubel, III et al.
patent: 5066231 (1991-11-01), Oxman et al.
patent: 5096969 (1992-03-01), Payne et al.
patent: 5183705 (1993-02-01), Birkholz et al.
patent: 5194500 (1993-03-01), Chin et al.
patent: 5326413 (1994-07-01), Esemplare et al.
patent: 5403188 (1995-04-01), Oxman et al.
patent: 5415544 (1995-05-01), Oxman et al.
patent: 5505654 (1996-04-01), Wood et al.
patent: 5520568 (1996-05-01), Craighead et al.
patent: 5721644 (1998-02-01), Murray et al.
"Step One: Your First Step in Surface Preparation", Lab Talk, Jan./Feb. 1994, pp. 6, 8, 18.
Gerber Optical, Inc. product literature, copyright Nov. 17, 1993.
Fast Grind.RTM. product literature, Super Systems, copyright unknown.
Advanced Blocking System product literature, Optical Works Corp., copyright unknown (2 sheets).
International Search Report for PCT/US/98/00803.
International Search Report for PCT/US/98/03715.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Thermoplastic lens blocking material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermoplastic lens blocking material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoplastic lens blocking material will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2123147

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.