US2533899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing vesicular molded products from burnt clays, shales, or similar argillaceous material
Assignee: American Aggregate Co
•
Filing: 1946-03-25
•
Granted: 1950-12-12
•
Expires: 1966-03-25
Abstract
No abstract record available.
Inventors
- 👤 Ryner Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:31
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/063; C04B38/0635; C04B38/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE PROCESS OF MAKING MOLDED ARTICLES FROM RAW ARGILACEOUS MATERIAL WHICH CONSISTS IN HEATING THE MATERIAL TO A TEMPERATURE BELOW THE TEMPERATURE AT WHICH VESICULATION AND EXPANSION OF SAID MATERIAL OCCURS; PLACING THE HEATED MATERIAL IN A MOLD; AND THEREAFTER HEATING THE MATERIAL TO AN EXPANDED CONDITION, SAID MOLD BEING MADE FROM A PRE-BAKED CLAY MATERIAL WHICH DOES NOT EXPAND AT THE TEMPERATURE OF SAID LAST MENTIONED HEATING STEP WHEREBY TO PRESENT A COMPOSITIE ARTICLE INCLUDING THE MOLD.
Claim 2
Dependent Claim
78 words
THE PROCESS OF MAKING MOLDED ARTICLES FROM RAW ARGILACEOUS MATERIAL WHICH CONSISTS IN HEATING THE MATERIAL TO A TEMPERATURE BELOW THE TEMPERATURE AT WHICH VESICULATION AND EXPANSION OF SAID MATERIAL OCCURS; PLACING THE HEATED MATERIAL IN A MOLD; AND THEREAFTER HEATING THE MATERIAL TO AN EXPANDED CONDITION, SAID MOLD BEING MADE FROM A PRE-BAKED CLAY MATERIAL WHICH DOES NOT EXPAND AT THE TEMPERATURE OF SAID LAST MENTIONED HEATING STEP WHEREBY TO PRESENT A COMPOSITIE ARTICLE INCLUDING THE MOLD.
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |