US2576312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making mineral wool
Assignee: Baldwin-Hill Co
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Filing: 1948-08-16
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Granted: 1951-11-27
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Expires: 1968-08-16
Abstract
No abstract record available.
Inventors
- 👤 Minnick Leonard John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:49
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN THE MANUFACTURE OF MINERAL WOOL, THE STEPS OF ADDING TO THE CUPOLA A CHARGE OF MINERAL WOOL-FORMING INGREDIENTS COMPRISING AGGLOMERATED BODIES IN WHICH PARTICLES OF MINERAL WOOL-FORMING MATERIAL ARE BOUND IN A MATRIX COMPRISING THAN 100 MICRONS IN AN AMOUNT BETWEEN GREATER THAN 100 MICRONS IN AN AMOUNT BETWEEN 3% AND 70%, MELTING SAID CHARGE, AND FIBERIZING THE MOLTEN CHARGE.
Claim 2
Dependent Claim
61 words
IN THE MANUFACTURE OF MINERAL WOOL, THE STEPS OF ADDING TO THE CUPOLA A CHARGE OF MINERAL WOOL-FORMING INGREDIENTS COMPRISING AGGLOMERATED BODIES IN WHICH PARTICLES OF MINERAL WOOL-FORMING MATERIAL ARE BOUND IN A MATRIX COMPRISING THAN 100 MICRONS IN AN AMOUNT BETWEEN GREATER THAN 100 MICRONS IN AN AMOUNT BETWEEN 3% AND 70%, MELTING SAID CHARGE, AND FIBERIZING THE MOLTEN CHARGE.
References Cited (Backward Citations)
US372486A
Cited
DE362631C
Cited
CH125908A
Cited
US2051279A
Cited
FR792947A
Cited
US2265540A
Cited
CH215397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |