Patent US5243218A successfully refreshed from Google Patents.
Patent US4169976A successfully refreshed from Google Patents.
US4169976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cutting or shaping of a substrate by laser
Assignee: VALFIVRE SpA
•
Filing: 1977-12-19
•
Granted: 1979-10-02
•
Expires: 1997-12-19
Abstract
Abstract A process for cutting or shaping of a ceramic substrate with laser light, comprising pulsing the laser light and moving the pulsing laser light source with respect to the substrate so that individual light pulses strike different spots along the substrate, defining a path; the laser light may pierce the substrate.
Inventors
- 👤 Gian Franco Cirri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:13
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0011; H05K3/0017; H05K3/0026; H05K3/0029; B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/36; B23K26/38; B23K26/382; B23K26/389; B23K26/40; B28; B28D; B28D1/00; B28D1/22; B28D1/221; B28D1/30; B23K2103/00; B23K2103/50; B23K2103/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
A process for providing openings in, scoring of or shaping of a substrate of a ceramic material, or the like, by laser, comprising the steps of: supplying a pulsed beam of laser light on the substrate portion to be drilled, scored or shaped, thereby producing a small size hole where each pulsed beam of light strikes the substrate; and in synchronized relationship with the light beam pulses, relatively moving the laser beam and the substrate with respect to each other so that the light beam pulses follow a path corresponding to the shape of the opening that has been drilled, the scoring path that has been scored or the shaping to be made in the substrate.
Claim 2
Dependent Claim
116 words
A process for providing openings in, scoring of or shaping of a substrate of a ceramic material, or the like, by laser, comprising the steps of: supplying a pulsed beam of laser light on the substrate portion to be drilled, scored or shaped, thereby producing a small size hole where each pulsed beam of light strikes the substrate; and in synchronized relationship with the light beam pulses, relatively moving the laser beam and the substrate with respect to each other so that the light beam pulses follow a path corresponding to the shape of the opening that has been drilled, the scoring path that has been scored or the shaping to be made in the substrate.
Claim 3
Dependent Claim
51 words
A process as claimed in claim 1, wherein the beam of laser light and the substrate are relatively moved and the frequency of the pulses of the beam of laser light are selected so that any spot on the substrate along the path is struck by only one light beam pulse.
Claim 4
Dependent Claim
77 words
A process as claimed in claim 1, wherein the duration of the intervals between successive pulses of the beam of laser light and the speed of the relative motion of the laser beam and the substrate are related such that each pulse of the beam of laser light strikes the substrate at a striking spot so near to the striking spot of the next pulse, that adjacent holes in the substrate partially overlap forming a continuous pathway.
Claim 5
Dependent Claim
78 words
A process as claimed in claim 3, wherein the path of the light beam pulses defines a section of the substrate that is intended to be removed by the remainder of the substrate after the pulsed light beam has moved over the path and the path of the beam of laser light first starts in the section of the substrate intended to be removed and thereafter moves along a pathway which cuts off the section to be removed.
Claim 6
Dependent Claim
78 words
A process as claimed in claim 1, wherein the path of the light beam pulses defines a section of the substrate that is intended to be removed by the remainder of the substrate after the pulsed light beam has moved over the path and the path of the beam of laser light first starts in the section of the substrate intended to be removed and thereafter moves along a pathway which cuts off the section to be removed.
Claim 7
Dependent Claim
46 words
A process as claimed in claim 1, wherein the material of the substrate, the thickness of the substrate and the intensity of each pulsed beam of laser light are selected so that the substrate is pierced through by each pulse of the beam of laser light.
Claim 8
Dependent Claim
51 words
A process as claimed in claim 6, wherein the beam of laser light and the substrate are relatively moved and the frequency of the pulses of the beam of laser light are selected so that any spot on the substrate along the path is struck by only one light beam pulse.
Claim 9
Dependent Claim
70 words
A process as claimed in claim 1, wherein the duration of the intervals between successive pulses of the beam of laser light and the speed of the relative motion of the laser beam and the substrate are related such that each pulse of the beam of laser light strikes the substrate quite near to the striking spot of the next pulse, so that adjacent holes in the substrate partially overlap.
Claim 10
Dependent Claim
14 words
A process as claimed in claim 1, wherein the substrate is comprised of alumina.
Claim 11
Dependent Claim
18 words
A process as claimed in claim 1, wherein the laser light is supplied by a carbon dioxide laser.
Claim 12
Dependent Claim
14 words
A process as claimed in claim 10, wherein the substrate is comprised of alumina.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |