US3305523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of telechelic-type polymers
Assignee: North American Aviation Corp
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Filing: 1962-08-30
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Granted: 1967-02-21
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Expires: 1982-08-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Burnside
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/306; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08L; C08L63/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
THE COMPOUND OBTAINED BY THE REACTION OF CARBOXYTERMINATED POLYBUTADIENE AND 1, 3-BIS (3, (2, 3-EXPOXY-PROPOXY) PROPYL) TETRA METHYL DISILOXANE.
Claim 2
Dependent Claim
19 words
THE COMPOUND OBTAINED BY THE REACTION OF CARBOXYTERMINATED POLYBUTADIENE AND 1, 3-BIS (3, (2, 3-EXPOXY-PROPOXY) PROPYL) TETRA METHYL DISILOXANE.
Claim 3
Independent Claim
25 words
THE METHOD OF IMPROVING THE PHYSICAL STRENGTH PROPERTIES OF CARBOXY-TERMINATED POLYBUTADIENE WHICH COMPRISES REACTING SAID POLYBUTADIENE WITH 1, 3-BIS (3(2, 3EPOXY-PROPOXY) PROPYL) TETRA METHYL DISILOXANE.
Claim 4
Independent Claim
25 words
THE METHOD OF IMPROVING THE PHYSICAL STRENGTH PROPERTIES OF CARBOXY-TERMINATED POLYBUTADIENE WHICH COMPRISES REACTING SAID POLYBUTADIENE WITH 1, 3-BIS (3(2, 3EPOXY-PROPOXY) PROPYL) TETRA METHYL DISILOXANE.
References Cited (Backward Citations)
US3070583A
Cited
US2848442A
Cited
US3055781A
Cited
US3053708A
Cited
US3087844A
Cited
US3147161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |