US2671995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging of materials
Assignee: Colgate Palmolive Co
•
Filing: 1949-10-22
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Granted: 1954-03-16
•
Expires: 1969-10-22
Abstract
No abstract record available.
Inventors
- 👤 Egan William Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:26
CPC Classifications
B; B65; B65B; B65B3/00; B65B3/04; B65B3/16; B65D; B65D35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS OF PACKAGING PASTY MATERIAL IN A COLLAPSIBLE ALUMINUM TUBE CONTAINER, WHICH MATERIAL TO CORROSIVE TO ALUMINUM METAL SURFACES, COMPRISING THE STEPS OF IMMERSING AN ANNEALED, COLLAPSIBLE TUBE OF ALUMINUM OF A PURITY OF AT LEAST 99.5% WHOSE SURFACES ARE FREE FROM ARTIFICIALLY DEPOSITED COATINGS OF ALUMINUM OXIDE INA BOILING WATER BATH FOR A PERIOD OF TIME OF APPROXIMATELY ONE-HALF TO TWO HOURS WHEREBY THE CORROSION RESISTANCE OF THE ALUMINUM METAL SURFACES OF THE TUBE IS SUBSTANTIALLY INCREASED, AND THEN FILLING SAID COLLAPSIBLE ALUMINUM TUBE WITH SAID CORROSIVE PASTY MATERIAL.
Claim 2
Dependent Claim
91 words
A PROCESS OF PACKAGING PASTY MATERIAL IN A COLLAPSIBLE ALUMINUM TUBE CONTAINER, WHICH MATERIAL TO CORROSIVE TO ALUMINUM METAL SURFACES, COMPRISING THE STEPS OF IMMERSING AN ANNEALED, COLLAPSIBLE TUBE OF ALUMINUM OF A PURITY OF AT LEAST 99.5% WHOSE SURFACES ARE FREE FROM ARTIFICIALLY DEPOSITED COATINGS OF ALUMINUM OXIDE INA BOILING WATER BATH FOR A PERIOD OF TIME OF APPROXIMATELY ONE-HALF TO TWO HOURS WHEREBY THE CORROSION RESISTANCE OF THE ALUMINUM METAL SURFACES OF THE TUBE IS SUBSTANTIALLY INCREASED, AND THEN FILLING SAID COLLAPSIBLE ALUMINUM TUBE WITH SAID CORROSIVE PASTY MATERIAL.
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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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |