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Patent US3349142A successfully refreshed from Google Patents.
US3349142A
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Process for the preparation of alkylated di-p-xylylenes
Assignee: Union Carbide Corp
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Filing: 1964-12-31
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Granted: 1967-10-24
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Ying L Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/32; C07C1/325; C07C1/328; C07C2603/00; C07C2603/92; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931; Y10S585/934; Y10S585/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
PROCESS FOR THE PREPARATION OF ALKYLATED DI-P-XYLYLENES HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
PROCESS FOR THE PREPARATION OF ALKYLATED DI-P-XYLYLENES HAVING THE GENERAL FORMULA:
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |