US3278519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formed products of cellulose crystallite aggregates
Assignee: FMC Corp
•
Filing: 1960-05-06
•
Granted: 1966-10-11
•
Expires: 1980-05-06
Abstract
No abstract record available.
Inventors
- 👤 Orlando A Battista
- 👤 Patricia A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/02; B; B29; B29B; B29B9/00; B29C; B29C66/00; B29C66/70; B29C66/73; B29C66/737; B29C66/7379; B29C66/73793
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A UNITARY THREE-DIMENSIONAL SELF-SUPPORTING, HEATAND IMPACT-RESISTANT STRUCTURE CONSISTING ESSENTIALLY OF DISINTEGRATED CELLULOSE CRYSTALLITE AGGREGATES AT LEAST PART OF WHICH HAVE A PARTICLE SIZE LESS THAN 1 MICRO, SAID AGGREGATES BEING HELD TOGETHER IN THE FORM OF THE STRUCTURE BYMECHANICAL INTER-LOCKING FORCES AND ALSO BEING INTERFACIALLY BONDED TOGETHER BY MEANS OF INTERMOLECULAR BONDING FORCES, SAID STRUCTURE HAVING A DENSITY IN THE RANGE OF 1.2 TO 1.57 AND BEING FURTHER CHARACTERIZED BY BEING RESISTANT TO BREAKAGE WHEN BEATEN WITH A HAMMER, BY BEING RESISTANT TO PIERCING BY A POINTED METAL OBJECT AND BY BEING FREE OF AMORPHOUS CELLULOSE.
Claim 2
Dependent Claim
96 words
A UNITARY THREE-DIMENSIONAL SELF-SUPPORTING, HEATAND IMPACT-RESISTANT STRUCTURE CONSISTING ESSENTIALLY OF DISINTEGRATED CELLULOSE CRYSTALLITE AGGREGATES AT LEAST PART OF WHICH HAVE A PARTICLE SIZE LESS THAN 1 MICRO, SAID AGGREGATES BEING HELD TOGETHER IN THE FORM OF THE STRUCTURE BYMECHANICAL INTER-LOCKING FORCES AND ALSO BEING INTERFACIALLY BONDED TOGETHER BY MEANS OF INTERMOLECULAR BONDING FORCES, SAID STRUCTURE HAVING A DENSITY IN THE RANGE OF 1.2 TO 1.57 AND BEING FURTHER CHARACTERIZED BY BEING RESISTANT TO BREAKAGE WHEN BEATEN WITH A HAMMER, BY BEING RESISTANT TO PIERCING BY A POINTED METAL OBJECT AND BY BEING FREE OF AMORPHOUS CELLULOSE.
References Cited (Backward Citations)
US1458542A
Cited
US2623874A
Cited
US2755509A
Cited
US2623875A
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US2767169A
Cited
US2788545A
Cited
US2873260A
Cited
US2978446A
Cited
US2972425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |