Patent US3244632A successfully refreshed from Google Patents.
US3244632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating material
Assignee: Individual
•
Filing: 1961-07-05
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Granted: 1966-04-05
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Expires: 1981-07-05
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Schulz
- 👤 Carl G Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:06
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04D; E04D13/00; E04D13/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A LIGHT WEIGHT INSULATING COMPOSITION CONSISTING ESSENTIALLY OF EXPANDED PERLITE PARTICLES COMPRISING ABOUT 20-40% BY WEIGHT OF THE COMPOSITION, EXFOLIATED VERMICULITE PARTICLES COMPRISING ABOUT 10-25% BY WEIGHT OF THE COMPOSITION, FIBERS COMPRISING ABOUT 10-25% BY WEIGHT OF THE COMPOSITION, MINERAL WOOL PRESENT AS PARTICLES HAVING THE APPROXIMATE SIZE AND SHAPE OF RICE KERNELS AND COMPRISING ABOUT 25-50% BY WEIGHT OF THE COMPOSITION, AND A BINDER COMPRISING ABOUT 5-15% BY WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
73 words
A LIGHT WEIGHT INSULATING COMPOSITION CONSISTING ESSENTIALLY OF EXPANDED PERLITE PARTICLES COMPRISING ABOUT 20-40% BY WEIGHT OF THE COMPOSITION, EXFOLIATED VERMICULITE PARTICLES COMPRISING ABOUT 10-25% BY WEIGHT OF THE COMPOSITION, FIBERS COMPRISING ABOUT 10-25% BY WEIGHT OF THE COMPOSITION, MINERAL WOOL PRESENT AS PARTICLES HAVING THE APPROXIMATE SIZE AND SHAPE OF RICE KERNELS AND COMPRISING ABOUT 25-50% BY WEIGHT OF THE COMPOSITION, AND A BINDER COMPRISING ABOUT 5-15% BY WEIGHT OF THE COMPOSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |