US2690393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fire-resistant insulation
Assignee: Armstrong World Industries Inc
•
Filing: 1950-06-24
•
Granted: 1954-09-28
•
Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Alan R Mcgarvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:03
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A METHOD OF PRODUCING FIRE-RESISTANT INSULATION, THE STEPS COMPRISING: DEPOSITING FROM A WATER SLURRY ONTO INORGANIC FIBERS A BINDER THEREFOR CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED FROM REACTING PHENOL AND FORMALDEHYDE IN THE PRESENCE OF A FINELY DIVIDED PRECIPITATED PHOSPHATE FIREPROOFING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOCALCIUM PHOSPHATE, TRI-ALUMINUM PHOSPHATE, MAGNESIUM AMMONIUM PHOSPHATE, AND MIXTURES THEREOF, AND CURING SAID RESIN ON SAID FIBERS IN THE PRESENCE OF SAID PHOSPHATE FIREPROOFING AGENT.
Claim 2
Dependent Claim
74 words
IN A METHOD OF PRODUCING FIRE-RESISTANT INSULATION, THE STEPS COMPRISING: DEPOSITING FROM A WATER SLURRY ONTO INORGANIC FIBERS A BINDER THEREFOR CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED FROM REACTING PHENOL AND FORMALDEHYDE IN THE PRESENCE OF A FINELY DIVIDED PRECIPITATED PHOSPHATE FIREPROOFING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOCALCIUM PHOSPHATE, TRI-ALUMINUM PHOSPHATE, MAGNESIUM AMMONIUM PHOSPHATE, AND MIXTURES THEREOF, AND CURING SAID RESIN ON SAID FIBERS IN THE PRESENCE OF SAID PHOSPHATE FIREPROOFING AGENT.
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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) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |