US2633441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making perforated composition plasterboard
Assignee: Individual
•
Filing: 1950-08-07
•
Granted: 1953-03-31
•
Expires: 1970-08-07
Abstract
No abstract record available.
Inventors
- 👤 George A Buttress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:49
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/043; B; B28; B28B; B28B1/00; B28B1/48; B28B11/00; B28B11/12; B29; B29C; B29C65/00; B29C65/74; B29C65/743; B29C65/7437; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C67/00; B29C67/0044; Y; Y10; Y10S; Y10S264/00; Y10S264/70; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF FORMING A PREFORATED PANEL BOARD CONSISTING IN FORMING A PLASTER BOARD PANEL SONSISTING OF A SOFT, WET COMPRESSIBLE PLASTIC LAYER CONVERTED ON OPPOSITE SIDES THEREOF WITH MOIST FACING SHEETS OF FIBROUS MATERIAL, DEPRESSING SPACED CIRCULAR AREAS OF SAID FACING SHEETS INTO THE PLASTIC LAYER FROM OPPOSITE SIDES THEREOF, BRINGING CIRCULAR AREAS OF THE OPPOSED FACING SHEETS INTO OVERLYING SUPERFICAL CONTACT WITH EACH OTHER INTERMEDIATE THE SIDES OF THE PLASTIC LAYER, PUNCHING CIRCULAR HOLES IN THE CONTACTING PORTIONS OF SAID SHEETS, AND COMPRESSING THE OVERLYING CONTACTING PORTIONS OF THE SHEET CONSTITUTING THE MARGINS OF SAID HOLES INTO INTIMATE ABUTTING SEALED RELATION TO EACH OTHER TO COMPLETELY SEAL THE PORTIONS OF THE PLASTIC BODY SURROUNDING SAID HOLES BY THE OVERLYING CONTACTING PORTIONS OF THE OPPOSED FACING SHEETS.
Claim 2
Independent Claim
128 words
THE METHOD OF FORMING A PREFORATED PANEL BOARD CONSISTING IN FORMING A PLASTER BOARD PANEL SONSISTING OF A SOFT, WET COMPRESSIBLE PLASTIC LAYER CONVERTED ON OPPOSITE SIDES THEREOF WITH MOIST FACING SHEETS OF FIBROUS MATERIAL, DEPRESSING SPACED CIRCULAR AREAS OF SAID FACING SHEETS INTO THE PLASTIC LAYER FROM OPPOSITE SIDES THEREOF, BRINGING CIRCULAR AREAS OF THE OPPOSED FACING SHEETS INTO OVERLYING SUPERFICAL CONTACT WITH EACH OTHER INTERMEDIATE THE SIDES OF THE PLASTIC LAYER, PUNCHING CIRCULAR HOLES IN THE CONTACTING PORTIONS OF SAID SHEETS, AND COMPRESSING THE OVERLYING CONTACTING PORTIONS OF THE SHEET CONSTITUTING THE MARGINS OF SAID HOLES INTO INTIMATE ABUTTING SEALED RELATION TO EACH OTHER TO COMPLETELY SEAL THE PORTIONS OF THE PLASTIC BODY SURROUNDING SAID HOLES BY THE OVERLYING CONTACTING PORTIONS OF THE OPPOSED FACING SHEETS.
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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |