Patent US2377600A successfully refreshed from Google Patents.
US3544656A
Expired / Lapsed
US
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Hard,elastic,and impact-resistant coatings
Assignee: Huels AG
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Filing: 1967-12-08
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Granted: 1970-12-01
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Expires: 1987-12-08
Abstract
No abstract record available.
Inventors
- 👤 Karl-Heinz Hornung
- 👤 Ernst-Christian Schutze
- 👤 Rudolf Nehring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:34
CPC Classifications
C; C08; C08L; C08L69/00; C08G; C08G63/00; C08G63/64; C09; C09D; C09D167/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA690043A
Cited
US2787630A
Cited
US3227680A
Cited
GB967540A
Cited
US3248416A
Cited
US3245963A
Cited
US3449467A
Cited
BE693956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |