US2974377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polybutene sealing compound for glazing purposes
Assignee: PPG Industries Inc
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Filing: 1959-03-10
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Granted: 1961-03-14
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Expires: 1979-03-10
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Kunkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:54
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/663; E06B3/66309; E06B3/66342; C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C09K; C09K3/00; C09K3/10; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C09K2200/00; C09K2200/02; C09K2200/0204; C09K2200/0208; C09K2200/0239; C09K2200/06; C09K2200/0615; C09K2200/0617
Claims Analysis
Total Claims: 0
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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) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |