US2508007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of rendering wool unshrinkable
Assignee: Individual
•
Filing: 1946-07-17
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Granted: 1950-05-16
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Expires: 1966-07-17
Abstract
No abstract record available.
Inventors
- 👤 Bloch Rudolf
- 👤 Goldschmid Kurt
- 👤 Lewin Mendel
- 👤 Goldschmidt Paul
- 👤 Farkas Hanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:03
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS OF SHRINKPROOFING WOOL, WHICH COMPRISES IMMERSING THE WOOL IN AN AQUEOUS LIQUOR CONTAINING HYDROCHLORIC ACID AND WATER-SOLUBLE BROMATE IN EXCESS OVER THE AMOUNT OF ACID AND BROMATE ABSORBABLE IN THE WOOL, WHICH ABSORBABLE AMOUNT CORRESPONDS TO ABOUT. 0.08 GRAMEQUIVALENTS PER 100 GRAMS OF AIR-DRY WOOL, THE EXCESS OF BROMATE (EXPRESSED AS BROMATE ION) BEING NOT LESS THAN 1.5%, AND THAT OF HYDROCHLORIC ACID (EXPRESSED AS HC1) BEING COMPRISED BETWEEN 6 AND 20%, BOTH CALCULATED ON THE WEIGHT OF AIRDRY WOOL; LEAVING THE WOOL IN THE LIQUOR UNTIL BROMATE ION HAS DISAPPEARED THEREFROM IN AN AMOUNT OF ABOUT 0.65 TO 1.6 GRAMS PER 100 GRAMS OF AIR-DRY WOOL; WITHDRAWING THE WOOL FROM THE LIQUOR AND REMOVING EXCESS TREATING LIQUOR FROM THE WOOL.
Claim 2
Dependent Claim
123 words
THE PROCESS OF SHRINKPROOFING WOOL, WHICH COMPRISES IMMERSING THE WOOL IN AN AQUEOUS LIQUOR CONTAINING HYDROCHLORIC ACID AND WATER-SOLUBLE BROMATE IN EXCESS OVER THE AMOUNT OF ACID AND BROMATE ABSORBABLE IN THE WOOL, WHICH ABSORBABLE AMOUNT CORRESPONDS TO ABOUT. 0.08 GRAMEQUIVALENTS PER 100 GRAMS OF AIR-DRY WOOL, THE EXCESS OF BROMATE (EXPRESSED AS BROMATE ION) BEING NOT LESS THAN 1.5%, AND THAT OF HYDROCHLORIC ACID (EXPRESSED AS HC1) BEING COMPRISED BETWEEN 6 AND 20%, BOTH CALCULATED ON THE WEIGHT OF AIRDRY WOOL; LEAVING THE WOOL IN THE LIQUOR UNTIL BROMATE ION HAS DISAPPEARED THEREFROM IN AN AMOUNT OF ABOUT 0.65 TO 1.6 GRAMS PER 100 GRAMS OF AIR-DRY WOOL; WITHDRAWING THE WOOL FROM THE LIQUOR AND REMOVING EXCESS TREATING LIQUOR FROM THE 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) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |