Patent US2825709A successfully refreshed from Google Patents.
US2825709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making coating composition containing polyethylene and polyiso-butylene
Assignee: Cosmocord Plastics Ltd
•
Filing: 1951-04-06
•
Granted: 1958-03-04
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Sturm Robert Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:36
CPC Classifications
H; H03; H03H; H03H3/00; H03H3/007; H03H3/02; C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/06; C09D123/18; C09D123/20; C09D123/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF MANUFACTURE OF A COATING COMPOSITION SUITABLE FOR APPLICATION WITHOUT HEAT WHICH COMPRISES COMPOUNDING POLYETHYLENE AND POLYISOBUTYLENE AT A TEMPERATURE OF BETWEEN 120*C. AND 130*C., ALLOWING THE RESULTANT COMPOUND TO COOL AND SOLIDIFY, BREAKING THE COOLED COMPOUND INTO CHIPS, GRINDING THE CHIPS IN A SOLVENT IN QUANTITY SUFFICIENT TO GIVE A LIQUID COMPOSITION CONTAINING NOT MORE THAN 30 PERCENT OF SOLIDS AT A TEMPERATURE OF BETWEEN 60*C. AND 80*C. UNTIL THE CHIPS ARE DISSOLVED, AND CONTINUING THE GRINDING WHILE REDUCING THE TEMPERATURE OF THE SOLUTION TO ROOM TEMPERATURE UNTIL THE MEAN SIZE OF THE COMPOUND PARTICLES IS LESS THAN 0.6 MICRON.
Claim 2
Independent Claim
103 words
THE METHOD OF MANUFACTURE OF A COATING COMPOSITION SUITABLE FOR APPLICATION WITHOUT HEAT WHICH COMPRISES COMPOUNDING POLYETHYLENE AND POLYISOBUTYLENE AT A TEMPERATURE OF BETWEEN 120*C. AND 130*C., ALLOWING THE RESULTANT COMPOUND TO COOL AND SOLIDIFY, BREAKING THE COOLED COMPOUND INTO CHIPS, GRINDING THE CHIPS IN A SOLVENT IN QUANTITY SUFFICIENT TO GIVE A LIQUID COMPOSITION CONTAINING NOT MORE THAN 30 PERCENT OF SOLIDS AT A TEMPERATURE OF BETWEEN 60*C. AND 80*C. UNTIL THE CHIPS ARE DISSOLVED, AND CONTINUING THE GRINDING WHILE REDUCING THE TEMPERATURE OF THE SOLUTION TO ROOM TEMPERATURE UNTIL THE MEAN SIZE OF THE COMPOUND PARTICLES IS LESS THAN 0.6 MICRON.
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |