US2945795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the hardness of flexible resinous composition sheets by irradiating the same
Assignee: Congoleum Industries Inc
•
Filing: 1955-05-06
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Granted: 1960-07-19
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Expires: 1975-05-06
Abstract
No abstract record available.
Inventors
- 👤 Alfred S Cummin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:55
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/007; D06N3/0081; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; B01J19/082; B29; B29C; B29C71/00; B29C71/04; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/085; B29K; B29K2021/00; B29K2995/00; B29K2995/0037; B29K2995/007; B29L; B29L2031/00; B29L2031/732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR INCREASING THE HARDNESS OF FLEXIBLE RESINOUS COMPOSITION SHEETS USEFUL IN THE MANUFACTURE OF FLOOR COVERINGS, SAID SHEETS HAVING A THICKNESS OF ABOUT 1/40 TO ABOUT 1/4 INCH, SAID RESINOUS COMPOSITION BEING SELECTED FROM THE GROUP CONSISTING OF OLEORESINOUS COMPOSITIONS COMPRISING ABOUT 20 TO ABOUT 50 PERCENT BINDER COMPRISING PARTIALLY OXIDIZED AND POLYMERIZED DRYING OIL AND ABOUT 80 TO ABOUT 50 PERCENT FILLER AND RUBBERY ELASTOMERIC COMPOSITIONS COMPRISING ABOUT 15 TO ABOUT 35 PERCENT RUBBER BINDER AND ABOUT 85 TO ABOUT 65 PERCENT FILLER, WHICH COMPRISES EXPOSING SAID SHEETS TO ATOMIC RADIATION HAVING A PARTICLE RANGE OF AT LEAST SUBSTANTIALLY OF THE ORDER OF GAMMA RAYS IN THE AMOUNT OF AT LEAST ABOUT 8,000,000 ROENTGENS TO YIELD HARDENED SHEETS SHOWING A MANDREL TEST VALUE OF LESS THAN 5 INCHES.
Claim 2
Dependent Claim
131 words
A PROCESS FOR INCREASING THE HARDNESS OF FLEXIBLE RESINOUS COMPOSITION SHEETS USEFUL IN THE MANUFACTURE OF FLOOR COVERINGS, SAID SHEETS HAVING A THICKNESS OF ABOUT 1/40 TO ABOUT 1/4 INCH, SAID RESINOUS COMPOSITION BEING SELECTED FROM THE GROUP CONSISTING OF OLEORESINOUS COMPOSITIONS COMPRISING ABOUT 20 TO ABOUT 50 PERCENT BINDER COMPRISING PARTIALLY OXIDIZED AND POLYMERIZED DRYING OIL AND ABOUT 80 TO ABOUT 50 PERCENT FILLER AND RUBBERY ELASTOMERIC COMPOSITIONS COMPRISING ABOUT 15 TO ABOUT 35 PERCENT RUBBER BINDER AND ABOUT 85 TO ABOUT 65 PERCENT FILLER, WHICH COMPRISES EXPOSING SAID SHEETS TO ATOMIC RADIATION HAVING A PARTICLE RANGE OF AT LEAST SUBSTANTIALLY OF THE ORDER OF GAMMA RAYS IN THE AMOUNT OF AT LEAST ABOUT 8,000,000 ROENTGENS TO YIELD HARDENED SHEETS SHOWING A MANDREL TEST VALUE OF LESS THAN 5 INCHES.
References Cited (Backward Citations)
US2648097A
Cited
US2668133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |