US4104460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating seaweed with hydrogen peroxide or hydrogen peroxide compound
Assignee: Individual
•
Filing: 1976-09-14
•
Granted: 1978-08-01
•
Expires: 1996-09-14
Abstract
Abstract A method is disclosed for stripping off the outer skin of seaweed with hydrogen peroxide or a hydroperoxide compound, which is suitable for use in preparing seaweed powder or algin from the seaweed.
Inventors
- 👤 Nobuyasu Hasebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0084
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
45 words
A method for preparing seaweed powder from seaweed which comprises treating the seaweed with hydrogen peroxide in aqueous solution in an amount sufficient to strip off the outer skin of the seaweed and then drying the seaweed which has been stripped of its outer skin.
Claim 2
Independent Claim
45 words
A method for preparing seaweed powder from seaweed which comprises treating the seaweed with hydrogen peroxide in aqueous solution in an amount sufficient to strip off the outer skin of the seaweed and then drying the seaweed which has been stripped of its outer skin.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the concentration of hydrogen peroxide is from 1% to 20%.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the pH of the aqueous solution is higher than 4 and less than 8.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein the treatment with hydrogen peroxide is carried out at a temperature of 30 to 80° C.
Claim 6
Dependent Claim
29 words
The method of claim 1 wherein the hydrogen peroxide is formed by decomposition of a hydrogen peroxide is formed by decomposition of a hydrogen peroxide compound in aqueous solution.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein an acid is added to the aqueous solution.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein a base is added to the aqueous solution.
Claim 9
Dependent Claim
20 words
The method of claim 1 wherein the treatment with hydrogen peroxide is carried out in the presence of ultraviolet irradiation.
Claim 10
Dependent Claim
47 words
The method of claim 1 wherein the concentration of hydrogen peroxide is from 1% to 20%, the pH of the aqueous solution is higher than 4 and less than 8 and the treatment with hydrogen peroxide is carried out at a temperature of 30° to 80° C.
Claim 11
Independent Claim
59 words
A method for preparing algin from seaweed which comprises treating the seaweed with hydrogen peroxide in aqueous solution in an amount sufficient to strip off the outer skin of the seaweed, drying the seaweed which has been stripped of its outer skin, and treating the dried, stripped seaweed with an alkaline reagent to extract alginic acid as algin therefrom.
Claim 12
Independent Claim
59 words
A method for preparing algin from seaweed which comprises treating the seaweed with hydrogen peroxide in aqueous solution in an amount sufficient to strip off the outer skin of the seaweed, drying the seaweed which has been stripped of its outer skin, and treating the dried, stripped seaweed with an alkaline reagent to extract alginic acid as algin therefrom.
Claim 13
Dependent Claim
46 words
The method of claim 10 wherein the pH of the aqueous solution of hydrogen peroxide is higher than 4 and less than 8 and the alkaline reagent is selected from the group consisting of an alkali, an alkali metal salt and an alkaline earth metal salt.
Claim 14
Dependent Claim
32 words
The method of claim 11 wherein the hydrogen peroxide concentration is from 1% to 20% and the treatment with hydrogen peroxide is carried out at a temperature of 30° to 80° C.
References Cited (Backward Citations)
US2128551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |