Patent US2744880A successfully refreshed from Google Patents.
US2744880A
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Corrosion-inhibiting soluble plug
Assignee: Kobe Inc
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Filing: 1950-09-18
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Granted: 1956-05-08
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Expires: 1970-09-18
Abstract
No abstract record available.
Inventors
- 👤 John R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:00
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0555; E; E21; E21B; E21B37/00; E21B37/02; E21B37/04; E21B41/00; E21B41/02; Y; Y10; Y10S; Y10S166/00; Y10S166/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A CLEANING PLUG INSERTABLE INTO AN OIL PIPE LINE AND TO BE PASSED THERETHROUGH IN ENGAGEMENT WITH THE INNER WALLS THEREOF TO REMOVE BY MECHANICAL ACTION DEPOSITS ON INNER SURFACES OF THE PIPE LINE, SUCH PLUG INCLUDING: A NORMALLY SOLID BINDER BODY OF OIL-SOLUBLE MATERIAL CAPABLE OF SLOW DISSOLUTIN OVER A LONG PERIOD OF TIME IN LIQUID PETROLEUM PRODUCTS ENCOUNTERED IN SAID PIPE LINE; AND A SOLID MINERAL CONSTITUENT DISTRIBUTED IN SAID BODY IN PROPORTION OF ABOUT 35 TO 40 PARTS BY WEIGHT TO EACH 100 PARTS BY WEIGHT OF SAID BINDER, SAID SOLID MINERAL CONSTITUENT HAVING THE TWO PROPERTIES OF ABRASIVENESS TO CLEAR MECHANICALLY INTERIOR SURFACES OF SAID PIPE LINE UPON PASSAGE THERETHROUGH AND OF INHIBITION OF CORROSION OF SUCH SURFACES AFTER PASSAGE THEREOVER.
Claim 2
Dependent Claim
125 words
A CLEANING PLUG INSERTABLE INTO AN OIL PIPE LINE AND TO BE PASSED THERETHROUGH IN ENGAGEMENT WITH THE INNER WALLS THEREOF TO REMOVE BY MECHANICAL ACTION DEPOSITS ON INNER SURFACES OF THE PIPE LINE, SUCH PLUG INCLUDING: A NORMALLY SOLID BINDER BODY OF OIL-SOLUBLE MATERIAL CAPABLE OF SLOW DISSOLUTIN OVER A LONG PERIOD OF TIME IN LIQUID PETROLEUM PRODUCTS ENCOUNTERED IN SAID PIPE LINE; AND A SOLID MINERAL CONSTITUENT DISTRIBUTED IN SAID BODY IN PROPORTION OF ABOUT 35 TO 40 PARTS BY WEIGHT TO EACH 100 PARTS BY WEIGHT OF SAID BINDER, SAID SOLID MINERAL CONSTITUENT HAVING THE TWO PROPERTIES OF ABRASIVENESS TO CLEAR MECHANICALLY INTERIOR SURFACES OF SAID PIPE LINE UPON PASSAGE THERETHROUGH AND OF INHIBITION OF CORROSION OF SUCH SURFACES AFTER PASSAGE THEREOVER.
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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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |