Patent US3342770A successfully refreshed from Google Patents.
US3342770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid resistant silicaceous compositions containing poly(episulfide) and impregnation process therefor
Assignee: ATK Launch Systems LLC
•
Filing: 1964-05-22
•
Granted: 1967-09-19
•
Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Stephen W Osborn
- 👤 George F Bulbenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:11
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/06; C08G75/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS TO PROVIDE A FLUID RESISTANT SILICACEOUS COMPOSITION COMPRISING (A) TREATING A SILICACEOUS MATERIAL WITH A FLUID EPISULFIDE IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY PERMEATE AT LEAST THE SURFACE INTERSTICES OF SAID MATERIAL WITH SAID FLUID EPISULFIDE, AND (B) CONVERTING SAID FLUID EPISULFIDE TO A SOLID POLY(EPISULFIDE) POLYMER WITHIN SAID MATERIAL TO FORM THEREIN A SUBSTANTIALLY FLUID RESISTANT BARRIER, SAID SILICACEOUS MATERIAL COMPRISING A MAJOR PROPORTION OF SAID COMPOSITION.
Claim 2
Dependent Claim
70 words
A PROCESS TO PROVIDE A FLUID RESISTANT SILICACEOUS COMPOSITION COMPRISING (A) TREATING A SILICACEOUS MATERIAL WITH A FLUID EPISULFIDE IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY PERMEATE AT LEAST THE SURFACE INTERSTICES OF SAID MATERIAL WITH SAID FLUID EPISULFIDE, AND (B) CONVERTING SAID FLUID EPISULFIDE TO A SOLID POLY(EPISULFIDE) POLYMER WITHIN SAID MATERIAL TO FORM THEREIN A SUBSTANTIALLY FLUID RESISTANT BARRIER, SAID SILICACEOUS MATERIAL COMPRISING A MAJOR PROPORTION OF SAID COMPOSITION.
References Cited (Backward Citations)
US2810774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |