US2677165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form and method of molding concrete columns therewith
Assignee: Sonoco Products Co
•
Filing: 1950-10-27
•
Granted: 1954-05-04
•
Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 James E Copenhaver
- 👤 Blanding D Clarkson
- 👤 Jr Auburn Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:42
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02; E04G13/021; Y; Y10; Y10S; Y10S249/00; Y10S249/04; Y10S425/00; Y10S425/012; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A FORM FOR MOLDING CONCRETE PILLARS AND THE LIKE COMPRISING A SPIRALLY WOUND TUBULAR PAPER BODY HAVING SUFFICIENT RIGIDITY TO SUPPORT A COLUMN OF CONCRETE MIX POURED THEREIN, SAID BODY BEING COATED INTERIORLY WITH A FILM OF POLYETHYLENE, WHEREBY ADHESION OF THE MOLD WALLS TO THE CURED CONCRETE IS PREVENTED.
Claim 2
Dependent Claim
50 words
A FORM FOR MOLDING CONCRETE PILLARS AND THE LIKE COMPRISING A SPIRALLY WOUND TUBULAR PAPER BODY HAVING SUFFICIENT RIGIDITY TO SUPPORT A COLUMN OF CONCRETE MIX POURED THEREIN, SAID BODY BEING COATED INTERIORLY WITH A FILM OF POLYETHYLENE, WHEREBY ADHESION OF THE MOLD WALLS TO THE CURED CONCRETE IS PREVENTED.
References Cited (Backward Citations)
US1600514A
Cited
US1701619A
Cited
US2367844A
Cited
US2296352A
Cited
US2462331A
Cited
US2491147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |