US5257706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning laser ablation debris
Assignee: Bausch and Lomb Inc
•
Filing: 1992-09-29
•
Granted: 1993-11-02
•
Expires: 2012-09-29
Abstract
Abstract A method is disclosed for ablating a target surface and cleaning an ablated target surface resulting in the reduction of ablation debris accumulation.
Inventors
- 👤 Kevin J. McIntyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:56
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00432; B29D11/00461; B23; B23K; B23K26/00; B23K26/16; B23K26/36; B23K26/361
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
25 words
In a method for photoablating a target surface, the improvement of which comprises exposing said target surface to alternating low fluence pulses of UV radiation.
Claim 2
Dependent Claim
25 words
In a method for photoablating a target surface, the improvement of which comprises exposing said target surface to alternating low fluence pulses of UV radiation.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein said pulsed UV radiation is in the form of a beam emitted from an excimer laser.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein said target surface is comprised of a crosslinked polymeric structure.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said target surface is a thermoset material.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein said target surface is a thermoplastic material.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein said target is a contact lens.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein the fluence of said low fluence pulse is from about 20 mJ/cm 2 to about 600 mJ/cm 2 .
Claim 9
Dependent Claim
26 words
The method of claim 1 wherein said target surface is a means capable of imparting optical properties or surface geometries on at least one other surface.
Claim 10
Dependent Claim
25 words
The method of claim 1 wherein the fluence of said high fluence pulse is from about 400 mJ/cm 2 to about 5 J/cm 2 .
Claim 11
Independent Claim
45 words
A method for removing debris from a target surface comprising the steps of: a) directing a beam of pulsed UV radiation at a initial scan area of said target surface; and b) exposing said target surface to intermittent pulses of alternating high and low fluence.
Claim 12
Independent Claim
45 words
A method for removing debris from a target surface comprising the steps of: a) directing a beam of pulsed UV radiation at a initial scan area of said target surface; and b) exposing said target surface to intermittent pulses of alternating high and low fluence.
Claim 13
Dependent Claim
54 words
A target surface modified by exposing said surface to intermittent pulses of UV radiation having alternating high and low fluence scanned in a direction away from an initial scan area of said target surface such that the surface of said target surface is scanned in a predetermined manner to achieve a predetermined final surface.
Claim 14
Dependent Claim
54 words
A target surface modified by exposing said surface to intermittent pulses of UV radiation having alternating high and low fluence scanned in a direction away from an initial scan area of said target surface such that the surface of said target surface is scanned in a predetermined manner to achieve a predetermined final surface.
Claim 15
Dependent Claim
13 words
The target of claim 11 wherein said target is a crosslinked polymeric material.
Claim 16
Dependent Claim
13 words
The target of claim 12 wherein said target is a thermoset plastic material.
Claim 17
Dependent Claim
12 words
The target of claim 11 wherein said target is a thermoplastic material.
Claim 18
Dependent Claim
15 words
The target surface of claim 11 wherein said target surface is an optically clear substrate.
Claim 19
Dependent Claim
12 words
The target of claim 11 wherein said target is a contact lens.
Claim 20
Dependent Claim
13 words
The target of claim 11 wherein said target is a toric contact lens.
Claim 21
Dependent Claim
26 words
The target surface of claim 11 wherein said target is a means capable of imparting optical properties or surface geometries on at least one other surface.
References Cited (Backward Citations)
US4307046A
Cited
US4417948A
Cited
US4568632A
Cited
US4563565A
Cited
US4713518A
Cited
US4752668A
Cited
US5068514A
Cited
US5061342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |