US3256223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface coating compositions comprising plaster of paris and method of producing the same
Assignee: Individual
•
Filing: 1962-07-12
•
Granted: 1966-06-14
•
Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Heijmer Gustaf Bristol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:31
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B40/00; C04B40/06; C04B40/0625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PACKAGED PRODUCT FOR FORMING SURFACINGS OF COATINGS, COMPRISING A COMPOSITION CONSISTING ESSENTIALLY OF: (A) GRADED SAND, (B) GRADED MINERAL FILLER OF PARTICLE SIZES, SMALLER THAN THOSE OF SAID GRADED SAND, (C) A WATER-SOLUBLE ORGANIC ADHESIVE BINDER, (D) PLASTER OF PARIS IN THE RANGE OF ABOUT 10% TO ABOUT 45% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, AND (E) WATER SAID WATER BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF ABOUT 25% TO ABOUT 60% BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, SAID AMOUNT OF WATER SERVING TO CAUSE THE COMPOSITION TO HARDEN INTO A COHERENT SOLID BODY WITHIN ABOUT ONE HALF HOUR AFTER COMPLETE MIXING OF SAID INGREDIENTS, SAID HARDENED BODY BEING RADILY COMMINUTABLE BY SIMPLE MECHANICAL ACTION INTO THE FORM OF A SPREADABLE, LOOSE, GRANULAR MASS OF PLASTIC CONSISTENCY WHICH DOES NOT REHARDEN INTO A COHERENT SOLID BODY UNTIL THE WATER CONTENT OF SAID SPREADABLE MASS IS ELIMINATED.
Claim 2
Dependent Claim
155 words
A PACKAGED PRODUCT FOR FORMING SURFACINGS OF COATINGS, COMPRISING A COMPOSITION CONSISTING ESSENTIALLY OF: (A) GRADED SAND, (B) GRADED MINERAL FILLER OF PARTICLE SIZES, SMALLER THAN THOSE OF SAID GRADED SAND, (C) A WATER-SOLUBLE ORGANIC ADHESIVE BINDER, (D) PLASTER OF PARIS IN THE RANGE OF ABOUT 10% TO ABOUT 45% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, AND (E) WATER SAID WATER BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF ABOUT 25% TO ABOUT 60% BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, SAID AMOUNT OF WATER SERVING TO CAUSE THE COMPOSITION TO HARDEN INTO A COHERENT SOLID BODY WITHIN ABOUT ONE HALF HOUR AFTER COMPLETE MIXING OF SAID INGREDIENTS, SAID HARDENED BODY BEING RADILY COMMINUTABLE BY SIMPLE MECHANICAL ACTION INTO THE FORM OF A SPREADABLE, LOOSE, GRANULAR MASS OF PLASTIC CONSISTENCY WHICH DOES NOT REHARDEN INTO A COHERENT SOLID BODY UNTIL THE WATER CONTENT OF SAID SPREADABLE MASS IS ELIMINATED.
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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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |