US3072513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filamentous mat and method for making same
Assignee: American Air Filter Co Inc
•
Filing: 1960-03-30
•
Granted: 1963-01-08
•
Expires: 1980-03-30
Abstract
No abstract record available.
Inventors
- 👤 James A Schlarb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:57
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D04H3/04; B; B01; B01D; B01D39/00; B01D39/14; D04H3/07; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/31504; Y10T428/31551; Y10T428/31616
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN THE METHOD OF MAKING A FILAMENTOUS MAT OF THE CHARACTER DESCRIBED: FORMING A CONDENSED FILAMENTOUS PLANAR MAT OF A SERIES OF OVERLYING LAYERS, EACH LAYER INCLUDING GENERALLY LONGITUDINALLY EXTENDING, TRANSVERSELY SPACED CONTINUOUS FILAMENTS, AND WITH THE FILAMENTS OF ADJACENT LAYERS LYING IN CROSSING RELATIONSHIP; DRAWING SAID MAT IN A TRANSVERSE DIRECTION RELATIVE TO THE GENERAL LAY OF SAID FILAMENTS TO SIMULTANEOUSLY ELONGATE SAID MAT AND EXPAND IT IN THICKNESS; SELECTIVELY SEVERING THE FILAMENTS FORMING SAID ELONGATED EXPANDED THICKNESS MAT AT LATERALLY AND LONGITUDINALLY SPACED INTERVALS AS SAID MAT
Claim 2
Dependent Claim
89 words
IN THE METHOD OF MAKING A FILAMENTOUS MAT OF THE CHARACTER DESCRIBED: FORMING A CONDENSED FILAMENTOUS PLANAR MAT OF A SERIES OF OVERLYING LAYERS, EACH LAYER INCLUDING GENERALLY LONGITUDINALLY EXTENDING, TRANSVERSELY SPACED CONTINUOUS FILAMENTS, AND WITH THE FILAMENTS OF ADJACENT LAYERS LYING IN CROSSING RELATIONSHIP; DRAWING SAID MAT IN A TRANSVERSE DIRECTION RELATIVE TO THE GENERAL LAY OF SAID FILAMENTS TO SIMULTANEOUSLY ELONGATE SAID MAT AND EXPAND IT IN THICKNESS; SELECTIVELY SEVERING THE FILAMENTS FORMING SAID ELONGATED EXPANDED THICKNESS MAT AT LATERALLY AND LONGITUDINALLY SPACED INTERVALS AS SAID MAT
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |