US2919218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a mask
Assignee: Ohio Sealer and Chemical Corp
•
Filing: 1954-04-23
•
Granted: 1959-12-29
•
Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 May William E Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:00
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/16; B05B12/20; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF MAKING A MASK, INCLUDING THE STEPS OF COVERING A PART TO BE PROTECTED WITH A HEAT DEFLECTING STRATUM, COVERING SAID STRATUM WITH A FIBROUS CLOTH, ARRANGING SAID STRATUM AND CLOTH TO CONFORM TO THE CONTOURS OF SAID PART, AND IMPREGNATING SAID ASSEMBLY WHILE
Claim 2
Independent Claim
46 words
A METHOD OF MAKING A MASK, INCLUDING THE STEPS OF COVERING A PART TO BE PROTECTED WITH A HEAT DEFLECTING STRATUM, COVERING SAID STRATUM WITH A FIBROUS CLOTH, ARRANGING SAID STRATUM AND CLOTH TO CONFORM TO THE CONTOURS OF SAID PART, AND IMPREGNATING SAID ASSEMBLY WHILE
References Cited (Backward Citations)
US1408871A
Cited
US1701627A
Cited
US2082791A
Cited
US2359975A
Cited
US2698991A
Cited
US2745173A
Cited
US2746049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |