US3499763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis phenols as high opacity diazotype couplers
Assignee: International Business Machines Corp
•
Filing: 1967-05-01
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Granted: 1970-03-10
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Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Clecak
- 👤 Robert J Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58; G03C1/585; C; C07; C07C; C07C37/00; C07C37/001; C07C37/002; C07C45/00; C07C45/27; C07C45/29; C07C45/51; C07C45/54; C07C45/61; C07C45/62; C07C45/67; C07C45/673; C07C45/68; C07C45/72; C07C45/74; C07C49/00; C07C49/76; C07C49/82; C07C49/835; C07C49/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432593A
Cited
GB651691A
Cited
US2593839A
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US2717832A
Cited
US3433766A
Cited
US2940852A
Cited
US3183093A
Cited
US3169864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |