Patent US3285767A successfully refreshed from Google Patents.
US3285767A
Expired / Lapsed
US
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Coating perforate articles
Assignee: Corning Glass Works
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Filing: 1963-09-16
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Granted: 1966-11-15
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Richard F Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:10
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
THE METHOD OF SELECTIVELY COATING AT LEAST ONE SURFACE OF A PERFORATE SUBSTRATE WHICH COMPRISES, FILLING THE PERFORATIONS WITH A POWDERED ABRASIVE MATERIAL, APPLYING A COATING THE THE ENTIRE SURFACE TO BE COATED, AND SUBJECTING THE SUBSTRATE TO AN ULTRASONICALLY VIBRATED BATH TO CAUSE SAID MATERIAL TO DISRUPT AND ABRADE AWAY THAT PART OF THE COATING APPLIED OVER THE FILLED PERFORATIONS AND BE EJECTED THEREFROM.
References Cited (Backward Citations)
US2681865A
Cited
US2912804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |