US3181985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing paper-lined by-product gypsum products
Assignee: Honeywell International Inc
•
Filing: 1960-09-07
•
Granted: 1965-05-04
•
Expires: 1980-09-07
Abstract
No abstract record available.
Inventors
- 👤 William H Gates
- 👤 Robert L Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:14
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/142; C04B28/143; C04B11/00; C04B11/02; C04B11/024; C04B2103/00; C04B2103/30; C04B2103/302; C04B2111/00; C04B2111/00474; C04B2111/00612; C04B2111/0062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1001350A
Cited
US1540045A
Cited
US1548358A
Cited
US1713868A
Cited
US1907438A
Cited
US1900381A
Cited
US1932956A
Cited
US2418590A
Cited
US2700605A
Cited
US3047447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |