US2822385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizers for styrenesulfonate monomers
Assignee: EIDP Inc
•
Filing: 1955-03-01
•
Granted: 1958-02-04
•
Expires: 1975-03-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Leland Lloyd Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:51
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/42; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
AS A COMPOSITION OF MATTER, A MIXTURE OF A MONOMERIC STYRENESULFONIC ACID COMPOUND AND A SALT OF NITROUS ACID.
Claim 2
Dependent Claim
19 words
AS A COMPOSITION OF MATTER, A MIXTURE OF A MONOMERIC STYRENESULFONIC ACID COMPOUND AND A SALT OF NITROUS ACID.
References Cited (Backward Citations)
US2159263A
Cited
US2607081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |