US2664362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous product surfaced with mineral granules and process of making same
Assignee: United States Gypsum Co
•
Filing: 1948-03-03
•
Granted: 1953-12-29
•
Expires: 1968-03-03
Abstract
No abstract record available.
Inventors
- 👤 Morton C Higgs
- 👤 Hartwright George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:01
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/31504; Y10T428/31844
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A BITUMINOUS SHEET PRODUCT HAVING MINERAL GRANULES PARTIALLY EMBEDDED IN AND ADHERED TO ONE SURFACE THEREOF, SAID MINERAL GRANULES HAVING A SURFACE FILM OF BAKED TALL OIL THEREON,
Claim 2
Dependent Claim
51 words
IN A PROCESS OF PREPARING A GRANULE-COATED ASPHALT SHEET INVOLVING THE STEPS OF EMBEDDING MINERAL GRANULES IN A HEAT-SOFTENED ASPHALT SURFACE AND THEREAFTER COOLING THE RESULTING SURFACE WHEREBY TO HARDEN THA ASPHALT, THE IMPROVEMENT OF APPLYING TO SAID MINERAL GRANUALES A BAKED COATING OF TALL OIL PRIOR TO THE EMBEDDING STEP.
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |