Patent US2940168A successfully refreshed from Google Patents.
US2940168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a packing for gas/liquid contact devices
Assignee: BOC Group Ltd
•
Filing: 1955-09-26
•
Granted: 1960-06-14
•
Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Monroe Adam Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:02
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/3222; B01J2219/32224; B01J2219/32227; B01J2219/324; B01J2219/32408; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB251331A
Cited
US437902A
Cited
FR359276A
Cited
FR596747A
Cited
US2214672A
Cited
GB578309A
Cited
US2615832A
Cited
US2615699A
Cited
US2594585A
Cited
US2470652A
Cited
GB642068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |