US3137612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic laminate with arc resistant properties
Assignee: Richardson Co
•
Filing: 1960-04-22
•
Granted: 1964-06-16
•
Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Chu Chien Fan
- 👤 Robert C Medl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:57
CPC Classifications
B; B32; B32B; B32B27/00; H; H01; H01B; H01B3/00; H01B3/18; H01B3/48; H01B3/485; Y; Y10; Y10S; Y10S174/00; Y10S174/01; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A LAMINATE HAVING A MINIMUM ARC RESISTANCE OF ABOUT 125 SECONDS AS DETERMINED BY ASTM TEST NO. D495-48T COMPRISING AS AN INTEGRAL ASSEMBLY A PLURALITY OF SUPERIMPOSED CELLULOSIC FIBER FILER SHEETS IMPREGNATED WITH A THERMOSETTING RESINOUS PHENOLIC ALDEHYDE CONDENSATION PRODUCT CURED TO A HARD INFUSIBLE STATE, SAID RESIN CONTAINING UNIFORMLY DISPERSED THEREIN BETWEEN ABOUT 75125 PARTS BASED ON 100 PARTS OF RESIN OF A FINELY DIVIDED ALUMINUM HYDROXIDE HAVING A PARTICLE SIZE WITH THE RANGE OF ABOUT .04 TO .10 MICRON.
Claim 2
Dependent Claim
81 words
A LAMINATE HAVING A MINIMUM ARC RESISTANCE OF ABOUT 125 SECONDS AS DETERMINED BY ASTM TEST NO. D495-48T COMPRISING AS AN INTEGRAL ASSEMBLY A PLURALITY OF SUPERIMPOSED CELLULOSIC FIBER FILER SHEETS IMPREGNATED WITH A THERMOSETTING RESINOUS PHENOLIC ALDEHYDE CONDENSATION PRODUCT CURED TO A HARD INFUSIBLE STATE, SAID RESIN CONTAINING UNIFORMLY DISPERSED THEREIN BETWEEN ABOUT 75125 PARTS BASED ON 100 PARTS OF RESIN OF A FINELY DIVIDED ALUMINUM HYDROXIDE HAVING A PARTICLE SIZE WITH THE RANGE OF ABOUT .04 TO .10 MICRON.
References Cited (Backward Citations)
US1160362A
Cited
US2162890A
Cited
US2594873A
Cited
US2680102A
Cited
GB785731A
Cited
US2781076A
Cited
US2997527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |