US2913346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous plaster bodies and method of making same
Assignee: Individual
•
Filing: 1958-05-28
•
Granted: 1959-11-17
•
Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Herbert Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:50
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF MAKING AERATED, SETTABLE, PLASTER SLURRIES COMPRISING ADDING A MINOR AMOUNT OF WATER-SOLUBLE FOAMING AGENT TO A MEASURED QUANTITY OF WATER, AGITATING THE WATER TO PRODUCE A MASS OF AQUEOUS FOAM, AND, WHILE CONTINUING SUCH AGITATION, GRADUALLY ADDING ONTO THE SURFACE OF THE MASS OF FOAM FROM ABOUT 0.9 PART TO ABOUT 1.2 PARTS BY WEIGHT OF DRY PLASTER OF PARIS TO 1 PART OF WATER IN THE FOAM, AND CONTINUING SAID AGITATION UNTIL THE PLASTER OF PARIS IS SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE MASS OF FOAM AND THE RESULTING AERATED SLURRY HAS REACHED A CONDITION OF INCIPIENT SETTING.
Claim 2
Independent Claim
101 words
A METHOD OF MAKING AERATED, SETTABLE, PLASTER SLURRIES COMPRISING ADDING A MINOR AMOUNT OF WATER-SOLUBLE FOAMING AGENT TO A MEASURED QUANTITY OF WATER, AGITATING THE WATER TO PRODUCE A MASS OF AQUEOUS FOAM, AND, WHILE CONTINUING SUCH AGITATION, GRADUALLY ADDING ONTO THE SURFACE OF THE MASS OF FOAM FROM ABOUT 0.9 PART TO ABOUT 1.2 PARTS BY WEIGHT OF DRY PLASTER OF PARIS TO 1 PART OF WATER IN THE FOAM, AND CONTINUING SAID AGITATION UNTIL THE PLASTER OF PARIS IS SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE MASS OF FOAM AND THE RESULTING AERATED SLURRY HAS REACHED A CONDITION OF INCIPIENT SETTING.
References Cited (Backward Citations)
US2731377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |