Patent US3839381A successfully refreshed from Google Patents.
US3839381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconocene naphthalene complex
Assignee: Honeywell International Inc
•
Filing: 1973-04-26
•
Granted: 1974-10-01
•
Expires: 1993-04-26
Abstract
Abstract 1. THE COMPOUND (($$C5H5)2ZR.CR10H8))N WHEREIN "N" DESIGNATES THAT SAID COMPOUND IS POLYMERIC.
Inventors
- 👤 G Pez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:29
CPC Classifications
C; C07; C07F; C07F17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE COMPOUND (($$C5H5)2ZR.CR10H8))N WHEREIN "N" DESIGNATES THAT SAID COMPOUND IS POLYMERIC.
Claim 2
Dependent Claim
11 words
THE COMPOUND (($$C5H5)2ZR.CR10H8))N WHEREIN "N" DESIGNATES THAT SAID COMPOUND IS POLYMERIC.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |