Patent US3098694A successfully refreshed from Google Patents.
US3098694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous treatment of wool to shrinkproof and sensitize the same
Assignee: Drew Chemical Corp
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Filing: 1960-07-11
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Granted: 1963-07-23
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Malcolm J Reider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:06
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A CONTINUOUS METHOD OF TREATING WOOL TO SHRINKPROOF AND SENSITIZE THE SAME WHICH COMPRISES(1) PASSING SAID WOOL THROUGH A BATH OF AN AQUEOUS SOLUTION OF AN ACID AND DEPOSITING ON SAID WOOL ABOUT 2.5% TO 15% OF SAID ACID BASED ON THE WEIGHT OF SAID WOOL, (2) THEN PASSING SAID WOOL THROUGH AN AQUEOUS SOLUTION OF AN ALKALI METAL BROMATE AND AN ALKALI METAL SALT OF AN ACID RADICAL TAKEN FROM THE CLASS CONSISTING OF BROMIDE AND CHLORIDE, (3) THEREAFTER NEUTRALIZING EXCESS OF ACID WHILE LEAVING SAID WOOL ON THE ACID SIDE, AND (4) SUBSEQUENTLY PASSING SAID WOOL THROUGH AN AQUEOUS SOLUTION OF A SUBSTANCE TAKEN FROM THE CLASS CONSISTING OF ALKALI METAL SULFITE AND BISULFITE (5) AND AT A TEMPERATUE NOT OVER ABOUT 175*F. TO SENSITIZE SAID WOOL.
Claim 2
Dependent Claim
129 words
A CONTINUOUS METHOD OF TREATING WOOL TO SHRINKPROOF AND SENSITIZE THE SAME WHICH COMPRISES(1) PASSING SAID WOOL THROUGH A BATH OF AN AQUEOUS SOLUTION OF AN ACID AND DEPOSITING ON SAID WOOL ABOUT 2.5% TO 15% OF SAID ACID BASED ON THE WEIGHT OF SAID WOOL, (2) THEN PASSING SAID WOOL THROUGH AN AQUEOUS SOLUTION OF AN ALKALI METAL BROMATE AND AN ALKALI METAL SALT OF AN ACID RADICAL TAKEN FROM THE CLASS CONSISTING OF BROMIDE AND CHLORIDE, (3) THEREAFTER NEUTRALIZING EXCESS OF ACID WHILE LEAVING SAID WOOL ON THE ACID SIDE, AND (4) SUBSEQUENTLY PASSING SAID WOOL THROUGH AN AQUEOUS SOLUTION OF A SUBSTANCE TAKEN FROM THE CLASS CONSISTING OF ALKALI METAL SULFITE AND BISULFITE (5) AND AT A TEMPERATUE NOT OVER ABOUT 175*F. TO SENSITIZE SAID WOOL.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |