US2989455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting acrylic compounds to a higher polymerization degree by photo-polymerization
Assignee: Azoplate Corp
•
Filing: 1957-06-05
•
Granted: 1961-06-20
•
Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Neugebauer Wilhelm
- 👤 Glos Martin
- 👤 Kasper Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F2/00; C08F2/46; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE PROPENYL MONOMERS WHEREIN THE PROPENYL MONOMERS ARE EXPOSED TO THE POLYMERIZING ACTION OF LIGHT IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ANTHRAQUINONE.
Claim 2
Dependent Claim
31 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE PROPENYL MONOMERS WHEREIN THE PROPENYL MONOMERS ARE EXPOSED TO THE POLYMERIZING ACTION OF LIGHT IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ANTHRAQUINONE.
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |