Patent CA1000122A successfully refreshed from Google Patents.
Patent US2938823A successfully refreshed from Google Patents.
US2938823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polyethylene terephthalate fibers
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1956-11-28
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Granted: 1960-05-31
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Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Salem Samuel
- 👤 Robert E Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF MAKING A COMPOSITE PRODUCT COMPRISING A BODY OF VULCANIZABLE RUBBERY COMPOUND AND REINFORCING FABRIC MATERIAL HAVING FIBERS OF A LINEAR, ORIENTED ESTER OF TEREPHTHALIC ACID AND A GLYCOL COMPRISING THE STEPS OF COATING SAID REINFORCING FABRIC MATERIAL WITH AN ADHESIVE DIP SOLUTION AT LEAST 3 PERCENT SOLIDS OF A RUBBERY COMPOUND AND AT LEAST 3/4%, ASSOCIATING SAID POLYISOCYANATE, DRYING AND HEAT, SETTING THE COATED MATERIAL AT FROM 250* F. TO 410* F. FOR AT LEAST 40 SECONDS AND NOT MORE THAN 10 MINUTES WHILE STRETCHING OF THE COATED MATERIAL IS HELD TO LESS THAN 3/4%, ASSOCIATING SAID COATED AND DRIED FABRIC MATERIAL WITH THE BODY OF VULCANIZABLE RUBBERY COMPOUND, AND THEN HEATING THE COMPOSITE ARTICLES TO EFFECT VULCANIZATION OF SAID RUBBERY COMPOUND AND TO ADHERE SAID FABRIC MATERIAL TO SAID ROBBERY COMPOUND.
Claim 2
Independent Claim
135 words
A METHOD OF MAKING A COMPOSITE PRODUCT COMPRISING A BODY OF VULCANIZABLE RUBBERY COMPOUND AND REINFORCING FABRIC MATERIAL HAVING FIBERS OF A LINEAR, ORIENTED ESTER OF TEREPHTHALIC ACID AND A GLYCOL COMPRISING THE STEPS OF COATING SAID REINFORCING FABRIC MATERIAL WITH AN ADHESIVE DIP SOLUTION AT LEAST 3 PERCENT SOLIDS OF A RUBBERY COMPOUND AND AT LEAST 3/4%, ASSOCIATING SAID POLYISOCYANATE, DRYING AND HEAT, SETTING THE COATED MATERIAL AT FROM 250* F. TO 410* F. FOR AT LEAST 40 SECONDS AND NOT MORE THAN 10 MINUTES WHILE STRETCHING OF THE COATED MATERIAL IS HELD TO LESS THAN 3/4%, ASSOCIATING SAID COATED AND DRIED FABRIC MATERIAL WITH THE BODY OF VULCANIZABLE RUBBERY COMPOUND, AND THEN HEATING THE COMPOSITE ARTICLES TO EFFECT VULCANIZATION OF SAID RUBBERY COMPOUND AND TO ADHERE SAID FABRIC MATERIAL TO SAID ROBBERY COMPOUND.
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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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |