US2880182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion-resistant neoprene foam rubber and method of making same
Assignee: Bridgestone Firestone Inc
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Filing: 1955-02-09
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Granted: 1959-03-31
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Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Weissert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/0025; C08J2311/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A METHOD OF PRODUCING VULCANIZED NEOPRENE FOAM RUBBER BY FROTHING, GELLING AND VULCANIZING NEOPRENE LATEX CONTAINING A FOAM PRODUCING AGENT, VULCANIZING INGREDIENTS, A GELLING AGENT AND A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF MINERAL OILS, VEGETABLE OILS AND PETROLATUM, THE STEPS OF ADDING ESSENTIALLY ALL OF SAID PLASTICIZER TO SAID LATEX AFTER FROTHING OF SAID LATEX HAS BEGUN AND ADJUSTING GELATION OF THE FROTHED LATEX BY APPROPRIATE ADJUSTMENT OF QUANTITIES AND RELATIVE TYPES OF FOAM PRODUCING AND GELLING AGENTS TO GEL THE FROTH AT LEAST SIX MINUTES AFTER ADMIXTURE OF GELLING AGENT WITH SAID LATEX, WHEREBY TO PRODUCE A PARTICULARLY COMBUSTION-RESISTANT CELLULAR NEOPRENE FOAM RUBBER WHEREIN THE PREDOMINANT NUMBER OF CELLS HAVE DIAMETERS OF FROM 0.43 MILLIMETER TO ABOUT 1.5 MILLIMETERS.
Claim 2
Dependent Claim
123 words
IN A METHOD OF PRODUCING VULCANIZED NEOPRENE FOAM RUBBER BY FROTHING, GELLING AND VULCANIZING NEOPRENE LATEX CONTAINING A FOAM PRODUCING AGENT, VULCANIZING INGREDIENTS, A GELLING AGENT AND A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF MINERAL OILS, VEGETABLE OILS AND PETROLATUM, THE STEPS OF ADDING ESSENTIALLY ALL OF SAID PLASTICIZER TO SAID LATEX AFTER FROTHING OF SAID LATEX HAS BEGUN AND ADJUSTING GELATION OF THE FROTHED LATEX BY APPROPRIATE ADJUSTMENT OF QUANTITIES AND RELATIVE TYPES OF FOAM PRODUCING AND GELLING AGENTS TO GEL THE FROTH AT LEAST SIX MINUTES AFTER ADMIXTURE OF GELLING AGENT WITH SAID LATEX, WHEREBY TO PRODUCE A PARTICULARLY COMBUSTION-RESISTANT CELLULAR NEOPRENE FOAM RUBBER WHEREIN THE PREDOMINANT NUMBER OF CELLS HAVE DIAMETERS OF FROM 0.43 MILLIMETER TO ABOUT 1.5 MILLIMETERS.
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |