US2892216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded material and method of making same
Assignee: Uniroyal Inc
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Filing: 1955-10-12
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Granted: 1959-06-30
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Expires: 1975-10-12
Abstract
No abstract record available.
Inventors
- 👤 Robert N Steel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:59
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/35; B; B29; B29B; B29B17/00; B29B17/0026; B29K; B29K2021/00; B29K2075/00; B29K2105/00; B29K2105/04; C08J2375/00; C08J2375/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A METHOD OF MAKING A SHAPED BODY OF ELASTIC SPONGE COMPRISING MIXING SHREDDED RUBBER LATEX FOAM WITH AN UNCURED POLYURETHANE POLYMER, CONFINING THE MIXTURE IN A DESIRED FORM, AND SUBSEQUENTLY CONVERTING THE UNCURED POLYURETHANE INTO A CURED ELASTOMERIC SPONGE WHICH ADHERES FIRMLY TO THE SAID SHREDDED LATEX FOAM, WHEREBY THE SAID SHREDDED LATEX FOAM IS FIRMLY BOUND TOGETHER INTO AN INTEGRAL MASS BY THE THUS CURED IN SITUPOLYURETHANE ELASTOMER SPONGE.
References Cited (Backward Citations)
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US2634252A
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FR1103628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |