US2633433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating material
Assignee: Baldwin-Hill Co
•
Filing: 1946-05-02
•
Granted: 1953-03-31
•
Expires: 1966-05-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick H Hollenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:31
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; H; H01; H01B; H01B3/00; H01B3/02; H01B3/06; H01B3/08; H01B3/084; Y; Y10; Y10T; Y10T442/00; Y10T442/50; Y10T442/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN INSULATING MATERIAL, CHARACTERIZED BY HIGH FLEXURAL STRENGTH, HEAT AND ELECTRICAL INSULATING VALUES, FIREPROOFNESS AND WAATERPROOFNESS, COMPRISING IN THE FORM OF AN INTERFELTED WEB, AN INTIMATE MIXTURE OF INORGANIC FIBRES SELECTED FROM THE GROUP CONSISTING OF GLASS WOOL, MINERAL WOOL AND ASBESTOS FIBRES AND MIXTURES THEREOF, BETWEEN ABOUT 2% AND ABOUT 18% OF BENTONITE AND BETWEEN ABOUT 1% AND ABOUT 10% OF A SYNTHETIC THERMOSETTING CONDENSATION PRODUCT SELECTED FROM THE GROUP CONSISTING OF PHENOL-FORMALDEHYDE, RESORCINOL-FORMALDEHYDE, UREA-FORMALDEHYDE AND FURFURAL-FORMALDEHYDE CONDENSATION PRODUCTS IN THE INFUSIBLE, INSOLUBLE STATE, SAID BENTONITE AND SAID SYNTHETIC THERMOSETTING CONDENSATION PRODUCT BEING MOLECULARLY INTERSPERSED WITH EACH OTHER, AT LEAST A MAJOR PORTION OF SAID INORGANIC FIBRES BEING ORIENTED IN A PLANE SUBSTANTIALLY PARALLEL TO THE PLANE OF THE INTERFELTED WEB, AND SAID BENTONITE BEING PRESENT IN AN AMOUNT IN EXCESS OF SAID SYNTHETIC THERMOSETTING CONDENSATION PRODUCT.
Claim 2
Dependent Claim
138 words
AN INSULATING MATERIAL, CHARACTERIZED BY HIGH FLEXURAL STRENGTH, HEAT AND ELECTRICAL INSULATING VALUES, FIREPROOFNESS AND WAATERPROOFNESS, COMPRISING IN THE FORM OF AN INTERFELTED WEB, AN INTIMATE MIXTURE OF INORGANIC FIBRES SELECTED FROM THE GROUP CONSISTING OF GLASS WOOL, MINERAL WOOL AND ASBESTOS FIBRES AND MIXTURES THEREOF, BETWEEN ABOUT 2% AND ABOUT 18% OF BENTONITE AND BETWEEN ABOUT 1% AND ABOUT 10% OF A SYNTHETIC THERMOSETTING CONDENSATION PRODUCT SELECTED FROM THE GROUP CONSISTING OF PHENOL-FORMALDEHYDE, RESORCINOL-FORMALDEHYDE, UREA-FORMALDEHYDE AND FURFURAL-FORMALDEHYDE CONDENSATION PRODUCTS IN THE INFUSIBLE, INSOLUBLE STATE, SAID BENTONITE AND SAID SYNTHETIC THERMOSETTING CONDENSATION PRODUCT BEING MOLECULARLY INTERSPERSED WITH EACH OTHER, AT LEAST A MAJOR PORTION OF SAID INORGANIC FIBRES BEING ORIENTED IN A PLANE SUBSTANTIALLY PARALLEL TO THE PLANE OF THE INTERFELTED WEB, AND SAID BENTONITE BEING PRESENT IN AN AMOUNT IN EXCESS OF SAID SYNTHETIC THERMOSETTING CONDENSATION PRODUCT.
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |