US2646370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making low-temperature meteorological balloons
Assignee: United States Department of the Army
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Filing: 1951-07-26
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Granted: 1953-07-21
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Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Nelson Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/0009; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF IMPROVING THE FREEZE RESISTANCE OF METEOROLOGICAL NEOPRENE BALLOON WHICH COMPRISES APPLYING TO THE SURFACES OF THE FULLY CURED AND DEFLATED NEOPRENE BALLOON A SOLUTION OF A PLASTICIZER, COMPATIBLE WITH NEOPRENE, IN AN ORGANIC LIQUID MEDIUM WHICH IS A NON-SOLVENT FOR VULCANIZED NEOPRENE, INFLATING SAID BALLOON AND ALLOWING THE BALLOON TO DRY UNTIL SAID ORGANIC LIQUID MEDIUM HAS EVAPORATED AND THE PLASTICIZER HAS BEEN ABSORBED BY THE NEOPRENE FILM.
Claim 2
Independent Claim
71 words
A METHOD OF IMPROVING THE FREEZE RESISTANCE OF METEOROLOGICAL NEOPRENE BALLOON WHICH COMPRISES APPLYING TO THE SURFACES OF THE FULLY CURED AND DEFLATED NEOPRENE BALLOON A SOLUTION OF A PLASTICIZER, COMPATIBLE WITH NEOPRENE, IN AN ORGANIC LIQUID MEDIUM WHICH IS A NON-SOLVENT FOR VULCANIZED NEOPRENE, INFLATING SAID BALLOON AND ALLOWING THE BALLOON TO DRY UNTIL SAID ORGANIC LIQUID MEDIUM HAS EVAPORATED AND THE PLASTICIZER HAS BEEN ABSORBED BY THE NEOPRENE FILM.
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) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |