US3340239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allyl ethers of methyl alpha-d-glucoside polymers and copolymers
Assignee: Kelco Co
•
Filing: 1965-05-12
•
Granted: 1967-09-05
•
Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Richard G Schweiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:00
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A POLYMER OF MONOALLYL ETHER OF METHYL A-DGLUCOSIDE HAVING A BOILING POINT OF 166 TO 170*C. AT 0.15 MM. HG AND A D.S. OF 1, SAID GLUCOSIDE ETHER BEING ESSENTIALLY FREE OF GLUCOSIDE ETHERS HAVING A D.S. OF 2 OR MORE.
Claim 2
Dependent Claim
41 words
A POLYMER OF MONOALLYL ETHER OF METHYL A-DGLUCOSIDE HAVING A BOILING POINT OF 166 TO 170*C. AT 0.15 MM. HG AND A D.S. OF 1, SAID GLUCOSIDE ETHER BEING ESSENTIALLY FREE OF GLUCOSIDE ETHERS HAVING A D.S. OF 2 OR MORE.
References Cited (Backward Citations)
US2609370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |