US3117403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cutting patterns in acoustical tile
Assignee: Johns Manville Corp
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Filing: 1957-08-16
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Granted: 1964-01-14
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Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 William A Jack
- 👤 George W Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/22; B44C1/221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A PROCESS OF FORMING DECORATIVE PATTERNS IN A FIBROUS ACOUSTICAL BOARD COMPRISING COATING AN OUTER SURFACE OF SAID BOARD WITH PAINT SO AS TO PROVIDE A DECORATIVE SURFACE COVERING MORE RESISTANT TO ATTRITION THAN THE FIBROUS STRUCTURE OF SAID BOARD, PLACING OVER THE COATED SURFACE A TEMPLATE HAVING A PLURALITY OF APERTURES THEREIN, HOLDING SAID TEMPLATE AND SAID BOARD SO THAT SAID COATED SURFACE FACES DOWNWARDLY, AND BLASTING ABRASIVE PARTICLES UPWARDLY THROUGH THE TEMPLATE APERTURES TO FORM CAVITIES HAVING SHARPLY DEFINED EDGES AT THE SURFACE OF SAID BOARD, AND PERMITTING THE ABRASIVE PARTICLES TO FALL BACK OUT OF THE CAVITIES.
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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |