US2493845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of waterproofing mineral wool
Assignee: Johns Manville Corp
•
Filing: 1945-07-02
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Granted: 1950-01-10
•
Expires: 1965-07-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Zettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF TREATING NEWLY FORMED MINERAL WOOL FIBERS COMPRISING, ADMIXING WITH THE FIBERS AN OLEAGINOUS LIQUID COATING MATERIAL ADJACENT THE POINT OF FORMATION OF SAID FIBERS TO COAT THE FIBERS, AND THEREAFTER DISTRIBUTING ONTO SAID COATED FIBERS A MINOR PROPORTION OF A POWDERED, WATER-REPELLENT MATERIAL SELECTED FROM THE GROUP CONSISTING OF WAXES, SOAP-FORMING FATTY ACIDS AND METALLIC SALTS OF SOAP-FORMING FATTY ACIDS WHEREBY SAID POWDERED, WATER-REPELLENT MATERIAL IS ADHESIVELY SECURED TO THE FIBERS BY SAID OLEAGINOUS MATERIAL.
Claim 2
Independent Claim
78 words
THE METHOD OF TREATING NEWLY FORMED MINERAL WOOL FIBERS COMPRISING, ADMIXING WITH THE FIBERS AN OLEAGINOUS LIQUID COATING MATERIAL ADJACENT THE POINT OF FORMATION OF SAID FIBERS TO COAT THE FIBERS, AND THEREAFTER DISTRIBUTING ONTO SAID COATED FIBERS A MINOR PROPORTION OF A POWDERED, WATER-REPELLENT MATERIAL SELECTED FROM THE GROUP CONSISTING OF WAXES, SOAP-FORMING FATTY ACIDS AND METALLIC SALTS OF SOAP-FORMING FATTY ACIDS WHEREBY SAID POWDERED, WATER-REPELLENT MATERIAL IS ADHESIVELY SECURED TO THE FIBERS BY SAID OLEAGINOUS MATERIAL.
References Cited (Backward Citations)
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Cited
US2019921A
Cited
US2107284A
Cited
US2138882A
Cited
GB490877A
Cited
US2252169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |