US3184288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of improved asbestos fiber
Assignee: Individual
•
Filing: 1962-02-14
•
Granted: 1965-05-18
•
Expires: 1982-02-14
Abstract
No abstract record available.
Inventors
- 👤 Lisle Auguste Louis De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:31
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
THE METHOD OF TREATING ASBESTOS FIBERS TO REMOVE CONTAMINANTS THEREFROM WHICH INCLUDES: (A) THE STEP OF SOAKING THE FIBERS IN AN AMMONIUM CHLORIDE SOLUTION.
Claim 2
Independent Claim
24 words
THE METHOD OF TREATING ASBESTOS FIBERS TO REMOVE CONTAMINANTS THEREFROM WHICH INCLUDES: (A) THE STEP OF SOAKING THE FIBERS IN AN AMMONIUM CHLORIDE SOLUTION.
Claim 3
Independent Claim
48 words
THE METHOD OF TREATING ASBESTOS FIBERS TO REMOVE COMTAMINANTS THEREFROM WHICH INCLUDES: (A) THE STEP OF FIRST TREATING THE FIBERS WITH A DILUTE SOLUTION OF HYDROCHLORIC ACID TO SOLUBILIZE AT LEAST SOME OF THE LIME CONTENT THEREOF, AND THEN (B) SOAKING SUCH FIBERS IN AN AMMONIUM CHLORIDE SOLUTION.
Claim 4
Independent Claim
48 words
THE METHOD OF TREATING ASBESTOS FIBERS TO REMOVE COMTAMINANTS THEREFROM WHICH INCLUDES: (A) THE STEP OF FIRST TREATING THE FIBERS WITH A DILUTE SOLUTION OF HYDROCHLORIC ACID TO SOLUBILIZE AT LEAST SOME OF THE LIME CONTENT THEREOF, AND THEN (B) SOAKING SUCH FIBERS IN AN AMMONIUM CHLORIDE SOLUTION.
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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |