US3112508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isotactic polpropylene brush bristle and brush containing such bristles
Assignee: E B & A C Whiting Co
•
Filing: 1962-07-26
•
Granted: 1963-12-03
•
Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Plummer C Munt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:30
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/224; A; A46; A46D; A46D1/00; D01; D01D; D01D4/00; D01D4/02; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN ABRASION RESISTANT BRUSH BRISTLE OF DRAW-ORIENTED, MELT EXTRUDED, LIQUID QUENCHED AT A TEMPERATURE OF ABOUT 40*F. TO ABOUT 60*F., ISOTACTIC POLYPROPYLENE HAVING
Claim 2
Dependent Claim
23 words
AN ABRASION RESISTANT BRUSH BRISTLE OF DRAW-ORIENTED, MELT EXTRUDED, LIQUID QUENCHED AT A TEMPERATURE OF ABOUT 40*F. TO ABOUT 60*F., ISOTACTIC POLYPROPYLENE HAVING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |