US2887377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed developer
Assignee: Individual
•
Filing: 1957-06-21
•
Granted: 1959-05-19
•
Expires: 1977-06-21
Abstract
No abstract record available.
Inventors
- 👤 Malon H Dickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:13
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; Y; Y10; Y10S; Y10S430/00; Y10S430/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PHOATOGRAPHIC DEVELOPER COMPRISING: DEMINERALIZED WATER (90*F.) ML 900 MONOMETHYLPARAMINOPHENOL SULFATE (0.02 MOLE PER LITER) G 6.8 SODIUM SULFITE (ANHYDROUS) G 12.6 HYDROWUIONE (0.10MOLE PER 1.) G 11.0 SODIUM CARBONATE (MONOHYDRATED) G 11.0 POTASSIUM BROMIDE G 5.9 DEMINERALIZED WATER TO MAKE TO 1 LITER.
Claim 2
Dependent Claim
44 words
A PHOATOGRAPHIC DEVELOPER COMPRISING: DEMINERALIZED WATER (90*F.) ML 900 MONOMETHYLPARAMINOPHENOL SULFATE (0.02 MOLE PER LITER) G 6.8 SODIUM SULFITE (ANHYDROUS) G 12.6 HYDROWUIONE (0.10MOLE PER 1.) G 11.0 SODIUM CARBONATE (MONOHYDRATED) G 11.0 POTASSIUM BROMIDE G 5.9 DEMINERALIZED WATER TO MAKE TO 1 LITER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |