US2676927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonflammable cellular resinous bodies and method of making same
Assignee: Dow Chemical Co
•
Filing: 1950-09-11
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Granted: 1954-04-27
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Expires: 1970-09-11
Abstract
No abstract record available.
Inventors
- 👤 John L Mccurdy
- 👤 Kin Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:47
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0019; C08K; C08K5/00; C08K5/02; C08K5/03; C08K5/04; C08K5/05; C08K5/06; C08J2325/00; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A SOLID, NON-FLAMMABLE, CELLULAR, RESINOUS BODY COMPOSED FOR THE MOST PART OF A MULTIPLICITY OF INDIVIDUALLY CLOSED CELLS HAVING THIN WALLS OF A SOLID SOLUTION OF A THEROPLASTIC POLYMER COMPRISING, IN CHEMICALLY COMBINED FORM, AT LEAST 50 PER CENT BY WEIGHT OF AT LEAST ONE ALKENYL AROMATIC COMPOUND HAVING THE GENERAL FORMULA:
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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |