US2779769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-halogen-containing dicarboxylic acids and anhydrides
Assignee: Occidental Chemical Corp
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Filing: 1952-09-10
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Granted: 1957-01-29
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Robitschek Paul
- 👤 Jr Claude Thomas Bean
- 👤 Newcomer Jack Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:31
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
A HEXACHLOROCYCLOPENTADIENE ADDUCT OF THE GROUP CONSISTING OF CHLOROMALIEC ACID, BROMO-MALEIC ACID, CHLORO-MALEIC ANHYDRIDE, BROMO-MALEIC ANHYDRIDE, THEIR ACID SALTS AND MIXTURES 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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |