Patent US2921870A successfully refreshed from Google Patents.
US2921870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of thermoplastic articles
Assignee: —
•
Filing: —
•
Granted: 1960-01-19
•
Expires: 1977-01-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:10
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; Y; Y10; Y10S; Y10S8/00; Y10S8/10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS FOR RENDERING THERMOSPLASTIC RESINOUS WHICH COMPRISES CONTACTING SAID ARTICLES WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ORGANOTRIHALOSILANE, A MIXTURE OF ORGANOTRIHALOSILANE AND DIORGANODIHALOSILANE, A MIXTURE OF ORGANOTRIHALOSILANE AND TRIORGANOHALOSILANE, AND A MIXTURE OF ORGANOTRIHALOSILANE, DIORGANODIHALOSILANE AND TRIORGANOHALOSILANE, HALOGEN BEING SELECTED FROM CHLORINE AND BROMINE, THE AVERAGE HALOGEN FUNCTIONALITY IN ANY OF SAID MIXTURES BEING GREATER THAN 2, FOR A PREDETERMINED PERIOD, AND SUBJECTING SAID TREATED ARTICLES TO CONDITIONS CAUSING THE CONTROLLED SLOW HUDROLYSIS OF SAID MEMBER, SAID PREDETERMINED PERIOD BEING SUCH THAT SAID MEMBER HAS PENETRATED INTO SAID ARTICLES TO A DEPTH OF AT LEAST ABOUT 3 MILS BELOW THE SURFACES THEREOF.
Claim 2
Dependent Claim
108 words
THE PROCESS FOR RENDERING THERMOSPLASTIC RESINOUS WHICH COMPRISES CONTACTING SAID ARTICLES WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ORGANOTRIHALOSILANE, A MIXTURE OF ORGANOTRIHALOSILANE AND DIORGANODIHALOSILANE, A MIXTURE OF ORGANOTRIHALOSILANE AND TRIORGANOHALOSILANE, AND A MIXTURE OF ORGANOTRIHALOSILANE, DIORGANODIHALOSILANE AND TRIORGANOHALOSILANE, HALOGEN BEING SELECTED FROM CHLORINE AND BROMINE, THE AVERAGE HALOGEN FUNCTIONALITY IN ANY OF SAID MIXTURES BEING GREATER THAN 2, FOR A PREDETERMINED PERIOD, AND SUBJECTING SAID TREATED ARTICLES TO CONDITIONS CAUSING THE CONTROLLED SLOW HUDROLYSIS OF SAID MEMBER, SAID PREDETERMINED PERIOD BEING SUCH THAT SAID MEMBER HAS PENETRATED INTO SAID ARTICLES TO A DEPTH OF AT LEAST ABOUT 3 MILS BELOW THE SURFACES THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |