Patent US2832997A successfully refreshed from Google Patents.
US2832997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous sheet material
Assignee: Goodyear Tire and Rubber Co
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Filing: 1953-09-24
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Granted: 1958-05-06
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Expires: 1973-09-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Bristol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:36
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/68; B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/321; B29K; B29K2105/00; B29K2105/06; B29K2105/12; Y; Y10; Y10S; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR MANUFACTURING POROUS FIBROUS SHEET ING OF SUBSTANTIALLY UNIFORM THICKNESS WHICH COMPRISES FORMING A LAYER OF FROTHED GELLABLE LATEX CONTAINING FIBROUS MATERIAL UNIFORMLY DISTRIBUTED THROUGHOUT THE FROTH, GELLING THE LAYER OF FROTH, PARTIALLY COMPRESSING THE LAYER OF GELLED FROTHED LATEX TO INCREASE ITS DENSITY, AND CURING THE PARTIALLY COMPRESSED LAYER UNDER PRESSURE SUFFICIENT TO FURTHER COMPRESS THE LAYER INTO A VULCANIZED FIBROUS SHEETING HAVING A MOISTURE VAPOR TRANSFER RATE OF FROM ABOUT 25 TO ABOUT 40 GRAMS PER 100 SQUARE INCHES PER 24 HOURS MEASURED AT AN 85% HUMIDITY DIFFERENTIAL AT 77*F.
Claim 2
Dependent Claim
94 words
A PROCESS FOR MANUFACTURING POROUS FIBROUS SHEET ING OF SUBSTANTIALLY UNIFORM THICKNESS WHICH COMPRISES FORMING A LAYER OF FROTHED GELLABLE LATEX CONTAINING FIBROUS MATERIAL UNIFORMLY DISTRIBUTED THROUGHOUT THE FROTH, GELLING THE LAYER OF FROTH, PARTIALLY COMPRESSING THE LAYER OF GELLED FROTHED LATEX TO INCREASE ITS DENSITY, AND CURING THE PARTIALLY COMPRESSED LAYER UNDER PRESSURE SUFFICIENT TO FURTHER COMPRESS THE LAYER INTO A VULCANIZED FIBROUS SHEETING HAVING A MOISTURE VAPOR TRANSFER RATE OF FROM ABOUT 25 TO ABOUT 40 GRAMS PER 100 SQUARE INCHES PER 24 HOURS MEASURED AT AN 85% HUMIDITY DIFFERENTIAL AT 77*F.
References Cited (Backward Citations)
US38813A
Cited
US1945055A
Cited
US2039529A
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US2161308A
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US2336944A
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US2517724A
Cited
US2568866A
Cited
US2512464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |