Patent US3325324A successfully refreshed from Google Patents.
US3325324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing bonded biaxially compressed fibrous blocks
Assignee: EIDP Inc
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Filing: 1964-11-10
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Granted: 1967-06-13
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Expires: 1984-11-10
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Charles Joseph
- 👤 Vincent James Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
D; D04; D04H; D04H11/00; B; B29; B29C; B29C43/00; B29C43/006; B29D; B29D99/00; B29D99/0092; D04H1/00; D04H1/70; D04H1/74; B29L; B29L2031/00; B29L2031/751; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN A PROCESS FOR PREPARING POROUS, BONDED FIBROUS BLOCKS BY PACKING PARALLEL ROWS OF BULKY FIBROUS ELEMENTS EACH HAVING A FIBER ORIENTATION PREDOMINANTLY IN THE LONGITUDINAL DIRECTION OF THE BULKY FIBROUS ELEMENTS TO FORM A FIBROUS BODY AND ATTACHING THE FIBROUS BODY AT SPACED CONTACT POINTS THROUGHOUT THE THREE DIMENSIONS OF THE FIBROUS BODY, THE IMPROVEMENT WHICH COMPRISES PACKING EACH ADJACENT ROW OF BULKY FIBROUS ELEMENTS IN A STAGGERED RELATIONSHIP TO FORM A FIBROUS BODY OF RELATIVELY LOW DENSITY AND THEREAFTER COMPRESING SAID FIBROUS BODY AT LEAST ALONG AN AZIS SUBSTANTAILLY PERPENDICULAR TO SAID PARALLEL ROWS OF BULKY FIBROUS ELEMENTS WITH A COMPRESSION RATIO IN THE RANGE OF FORM ABOUT 2.0 TO ABOUT 8.0 AND TO A FINAL DENSITY IN THE RANGE OF FROM ABOUT 0.2 POUND PER CUBIC FOOT TO ABOUT 5.0 POUNDS PER CUBIC FOOT, WITH THE PROVISO THAT WHEN THE FINAL DENSITY IS IN THE RANGE OF FROM ABOUT 0.5 POUND PER CUBIC FOOT TO ABOUT 5.0 POUNDS PER CUBIC FOOT, THE COMPRESSION RATIO IS IN THE RANGE OF FROM ABOUT 3.5 TO ABOUT 8.0 AND SAID FIBROUS BODY IS BIAXIALLY COMPRESSED.
Claim 2
Dependent Claim
185 words
IN A PROCESS FOR PREPARING POROUS, BONDED FIBROUS BLOCKS BY PACKING PARALLEL ROWS OF BULKY FIBROUS ELEMENTS EACH HAVING A FIBER ORIENTATION PREDOMINANTLY IN THE LONGITUDINAL DIRECTION OF THE BULKY FIBROUS ELEMENTS TO FORM A FIBROUS BODY AND ATTACHING THE FIBROUS BODY AT SPACED CONTACT POINTS THROUGHOUT THE THREE DIMENSIONS OF THE FIBROUS BODY, THE IMPROVEMENT WHICH COMPRISES PACKING EACH ADJACENT ROW OF BULKY FIBROUS ELEMENTS IN A STAGGERED RELATIONSHIP TO FORM A FIBROUS BODY OF RELATIVELY LOW DENSITY AND THEREAFTER COMPRESING SAID FIBROUS BODY AT LEAST ALONG AN AZIS SUBSTANTAILLY PERPENDICULAR TO SAID PARALLEL ROWS OF BULKY FIBROUS ELEMENTS WITH A COMPRESSION RATIO IN THE RANGE OF FORM ABOUT 2.0 TO ABOUT 8.0 AND TO A FINAL DENSITY IN THE RANGE OF FROM ABOUT 0.2 POUND PER CUBIC FOOT TO ABOUT 5.0 POUNDS PER CUBIC FOOT, WITH THE PROVISO THAT WHEN THE FINAL DENSITY IS IN THE RANGE OF FROM ABOUT 0.5 POUND PER CUBIC FOOT TO ABOUT 5.0 POUNDS PER CUBIC FOOT, THE COMPRESSION RATIO IS IN THE RANGE OF FROM ABOUT 3.5 TO ABOUT 8.0 AND SAID FIBROUS BODY IS BIAXIALLY COMPRESSED.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |