US3309166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying dry cleaning solvents
Assignee: Individual
•
Filing: 1963-08-23
•
Granted: 1967-03-14
•
Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Moncada Alfonso
- 👤 Moncada Vincenzo
- 👤 Moncada John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF TREATIANG DIRTY DRY CLEANING FLUID TO REMOVE CONTAMINANTS THEREFROM WHICH COMPRISES CONTACTING SAID DIRTY DRY CLEANING FLUID WITH AN ADMIXTURE, CONSISTING ESSENTIALLY OF 1-7 PARTS BY WEIGHT OF BONE CHAR AND 1-5 PARTS BY WEIGHT OF AN ACTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACTIVATED CARBON AND AN ADSORPTIVE CLAY.
Claim 2
Independent Claim
54 words
A METHOD OF TREATIANG DIRTY DRY CLEANING FLUID TO REMOVE CONTAMINANTS THEREFROM WHICH COMPRISES CONTACTING SAID DIRTY DRY CLEANING FLUID WITH AN ADMIXTURE, CONSISTING ESSENTIALLY OF 1-7 PARTS BY WEIGHT OF BONE CHAR AND 1-5 PARTS BY WEIGHT OF AN ACTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACTIVATED CARBON AND AN ADSORPTIVE CLAY.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |