US Patent No: 7,448,942
Number of patents in Portfolio can not be more than 2000
Grinding method
Stats
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Nov 11, 2008
Issued date -
Feb 13, 2004
filing date -
10/504,565
serial no -
In Force
status
Importance
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Abstract
A surface to be polished having a plurality of surfaces of significantly different curvatures can be polished evenly by the use of resilient abrasive members by using a polishing method including the steps of selecting at least two resilient abrasive members 10a, 10b from the resilient abrasive members having a plurality of dome-shaped portions of different curvatures determined by a plurality of curvatures on the surface to be polished of the polishing target, and mounting the selected resilient abrasive members 10a, 10b to specific abrasive member mounting jigs 20a, 20b and polishing the surface to be polished of the polishing target L2.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,577,950 Conformal tool operating apparatus and process for an ophthalmic lens finer/polisher | 15 | 1993 | |
| 5,662,518 Pneumatically assisted unidirectional conformal tool | 12 | 1996 | |
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| 2004/0229,553 Method, apparatus, and tools for precision polishing of lenses and lens molds | 8 | 2004 | |
| 2005/0079,812 Tool, apparatus, and method for precision polishing of lenses and lens molds | 6 | 2004 | |
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| 6,527,632 Lap having a layer conformable to curvatures of optical surfaces on lenses and a method for finishing optical surfaces | 6 | 1999 | |
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| 6,932,678 Polishing apparatus | 3 | 2003 | |
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| 4,928,435 Apparatus for working curved surfaces on a workpiece | 14 | 1988 | |
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| 6,110,017 Method and apparatus for polishing ophthalmic lenses | 8 | 1999 | |
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| 6,276,994 Plastic lens substrate and apparatus for and method of producing the same | 20 | 1997 | |
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| 6,383,061 Procedure of and device for processing optical lenses | 7 | 1999 | |
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| 6,155,911 Method and device for polishing both sides of optical lenses | 5 | 1998 | |
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| 6,394,892 Device for machining optical workpieces | 16 | 2001 | |
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| 6,945,849 Polishing method and polishing device | 1 | 2003 | |
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| 6,796,877 Abrading machine | 15 | 2001 | |
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| 4,979,337 Polishing tool for contact lenses and associated method | 14 | 1986 | |
| 5,074,082 Method for producing bifocal contact lenses | 5 | 1989 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 11, 2016 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 11, 2020 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |