US3580763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fiber-reinforced foam products
Assignee: Monsanto Co
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Filing: 1969-03-13
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Granted: 1971-05-25
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Expires: 1989-03-13
Abstract
Abstract FLEXIBLE FIBER-REINFORCED FOAM PRODUCTS, COMPRISED OF UNITARY CELLULAR STRUCTURE FOAM BODIES, THE FOAM BODIES HAVING A FIBER CONTENT COMPRISING A MULTIPLICITY OF STAPLE FIBERS RANDOMLY ORIENTED IN A MULTI-DIRECTIONAL PATTERN AND DISTRIBUTED WITH UNIFORM RANDOMNESS THROUGHOUT THE BODY, THE FIBER CONTENT PER UNIT AREA BEING AT LEAST THE AMOUNT DETERMINED WITH RESPECT TO THE DENIER BY THE EQUATION: WHERE Y=FIBER DENIER AND X=WEB WEIGHT IN OUNCES PER SQUARE YARD, ARE PRODUCED BY FORMING A NONWOVEN WEB CONSISTING OF RANDOMLY ORIENTED FIBERS OF CONTROLLED INTERFIBER COHESION AND POROSITY, DISPENSING A FOAMABLE MIXTURE ONTO THE WEB, AND THEN COMPRESSING THE FOAM-COVERED WEB.
Inventors
- 👤 Gaspard X Criner
- 👤 William A Blackburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:30
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29C44/02; B29C44/12; B29C44/1209; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/68; B29L; B29L2007/00; B29L2009/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |