US Patent No: 4,962,618

Number of patents in Portfolio can not be more than 2000

Lens lapping pad

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Importance

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Abstract

A lens lapping pad comprising a zinc alloy foil having a thickness of about 0.1 mm, and a backing of cloth impregnated with a pressure sensitive adhesive, to give an overall pad thickness of about 0.5 mm. A peelable cover may protect the cloth backing.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
J & S WYLDE, LTD.SURREY1

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wylde, Stephen J 22 Bath Road, Emsworth, Hampshire, GB2 5 48

Cited Art

Patent Info (Count) # Cites Year
 
MINNESOTA MINING AND MANUFACTURING COMPANY (1)
4,274,232 Friction grip pad 36 1978
 
NORTON COMPANY (1)
4,644,703 Plural layered coated abrasive 74 1986
 
SHOWA DENKO K.K. (1)
4,555,250 Grinding sheet and process for preparing same 5 1984

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
GERBER OPTICAL, INC. (2)
5,210,695 Single block mounting system for surfacing and edging of a lens blank and method therefor 19 1990
5,269,102 Disposable lap blank 8 1991
 
COBURN TECHNOLOGIES, INC. (1)
5,577,950 Conformal tool operating apparatus and process for an ophthalmic lens finer/polisher 15 1993
 
INLAND DIAMOND PRODUCTS COMPANY (1)
6,089,963 Attachment system for lens surfacing pad 17 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,895,312 Apparatus for removing surface irregularities from a flat workpiece 0 1996
 
PRACTICAL SYSTEMS, INC. (1)
5,384,988 Lens surfacing assembly 12 1993
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (4)
6,733,367 Method and apparatus for polishing silicon wafers 4 2002
8,182,315 Chemical mechanical polishing pad and dresser 2 2008
D603884 Pad for grinding or polishing ophthalmic lenses 0 2009
8,414,361 Silicon carbide, sapphire, germanium, silicon and pattern wafer polishing templates holder 0 2010