US4031306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polygalactomannan allyl ether compositions
Assignee: Stein Hall and Co Inc
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Filing: 1975-12-15
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Granted: 1977-06-21
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Expires: 1995-12-15
Abstract
Abstract This invention provides novel allyl ethers of polygalactomannans having a degree of substitution between about 0.01 and 3, and further provides a process for producing allyl ethers of polygalactomannan gums by contacting solid polygalactomannan gum with allyl halide and alkali metal hydroxide or ammonium hydroxide under alkaline conditions in an aqueous solution of water-miscible solvent.
Inventors
- 👤 Ronald N. DeMartino
- 👤 Anthony B. Conciatori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:19
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; C08B37/0093; C08B37/0096; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
Allyl ethers of guar gum having a degree of substitution between about 0.01 and 3.0.
Claim 2
Dependent Claim
15 words
Allyl ethers of guar gum having a degree of substitution between about 0.01 and 3.0.
Claim 3
Dependent Claim
16 words
Allyl ethers of locust bean gum having a degree of substitution between about 0.01 and 3.0.
Claim 4
Dependent Claim
16 words
Allyl ethers of locust bean gum having a degree of substitution between about 0.01 and 3.0.
Claim 5
Dependent Claim
15 words
Allyl ethers of polygalactomannan gum having a degree of substitution between about 0.01 and 3.0.
Claim 6
Dependent Claim
15 words
Allyl ethers of polygalactomannan gum having a degree of substitution between about 0.01 and 3.0.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |