US3326366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolled waterproofing material
Assignee: Flintkote Co
•
Filing: 1963-04-08
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Granted: 1967-06-20
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Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Walter L Butterfield
- 👤 Arnold J Hoiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:48
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A WATERPROOFING MATERIAL IN CONTINUOUS ROLLED FORM COMPRISING A FELT BASE SHEET SATURATED WITH A BITUMEN AND COATED ON AT LEAST ONE SIDE WITH A WATERPROOF COATING COMPOSITION, SAID COATING COMPOSITION CONSISTING ESSENTIALLY OF AN ASPHALT WHICH HAS BEEN AIR BLOWN IN THE PRESENCE OF A PHOSPHOROUS CATALYST, SAID CATALYTICALLY AIRBLOWN ASPHALT HAVING A SOFTENING POINT IN THE RANGE OF ABOUT 210* F. TO ABOUT 230* F. WHEN TESTED BY THE RING AND BALL ASTM METHOD OF TEST D-36 AND A PENETRATION AT 77* F. 100 GRAMS, 5 SEC. OF GREATER THAN 3.5 MM. WHEN TESTED BY ASTM METHOD OF TEST D-5, AND FROM 15% TO 45% BY WEIGHT BASED ON THE WEIGHT OF THE COATING OF A GRANULAR MINERAL FILLER HAVING A PARTICLE SIZE SUCH THAT A MAJORITY THEREOF WILL PASS THROUGH A 200 MESH SCREEN.
Claim 2
Dependent Claim
137 words
A WATERPROOFING MATERIAL IN CONTINUOUS ROLLED FORM COMPRISING A FELT BASE SHEET SATURATED WITH A BITUMEN AND COATED ON AT LEAST ONE SIDE WITH A WATERPROOF COATING COMPOSITION, SAID COATING COMPOSITION CONSISTING ESSENTIALLY OF AN ASPHALT WHICH HAS BEEN AIR BLOWN IN THE PRESENCE OF A PHOSPHOROUS CATALYST, SAID CATALYTICALLY AIRBLOWN ASPHALT HAVING A SOFTENING POINT IN THE RANGE OF ABOUT 210* F. TO ABOUT 230* F. WHEN TESTED BY THE RING AND BALL ASTM METHOD OF TEST D-36 AND A PENETRATION AT 77* F. 100 GRAMS, 5 SEC. OF GREATER THAN 3.5 MM. WHEN TESTED BY ASTM METHOD OF TEST D-5, AND FROM 15% TO 45% BY WEIGHT BASED ON THE WEIGHT OF THE COATING OF A GRANULAR MINERAL FILLER HAVING A PARTICLE SIZE SUCH THAT A MAJORITY THEREOF WILL PASS THROUGH A 200 MESH SCREEN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |