US2604427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded mineral fiber products and process of preparing the same
Assignee: Owens Corning
•
Filing: 1949-08-02
•
Granted: 1952-07-22
•
Expires: 1969-08-02
Abstract
No abstract record available.
Inventors
- 👤 Marshall C Armstrong
- 👤 Eugene M Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/122; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A FIBROUS STRUCTURE COMPRISING GLASS FIBERS BONDED INTO A COMPOSITE MASS WITH THE PRODUCT RESULTING FROM THE ADVANCEMENT WHILE ON THE FIBERS OF A MIXTURE OF 25 TO 75 PARTS BY WEIGHT DICYANDIAMIDE FORMALDEHYDE IN AN INTERMEDIATE STAGE OF POLYMERIC GROWTH AND 75 TO 25 PARTS BY WEIGHT OF A HEAT HARDENABLE PHENOLIC RESIN-FORMING MATERIAL.
Claim 2
Dependent Claim
55 words
A FIBROUS STRUCTURE COMPRISING GLASS FIBERS BONDED INTO A COMPOSITE MASS WITH THE PRODUCT RESULTING FROM THE ADVANCEMENT WHILE ON THE FIBERS OF A MIXTURE OF 25 TO 75 PARTS BY WEIGHT DICYANDIAMIDE FORMALDEHYDE IN AN INTERMEDIATE STAGE OF POLYMERIC GROWTH AND 75 TO 25 PARTS BY WEIGHT OF A HEAT HARDENABLE PHENOLIC RESIN-FORMING MATERIAL.
References Cited (Backward Citations)
US1775135A
Cited
US1812374A
Cited
GB476043A
Cited
GB498165A
Cited
US2288072A
Cited
US2335102A
Cited
US2260187A
Cited
US2488034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |