Patent US3304179A successfully refreshed from Google Patents.
US3304179A
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US
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Diglycolaldehyde hardening agent for gelatin
Assignee: May and Baker Ltd
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Filing: 1964-11-04
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Granted: 1967-02-14
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Expires: 1984-11-04
Abstract
No abstract record available.
Inventors
- 👤 Field George Terence James
- 👤 Huddleston Patrick Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:59
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/301; C; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/515; C07C45/56; C07C45/57; C07C45/59; C07C47/00; C07C47/02; C07C47/198
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A METHOD OF HARDENING GELATIN WHICH COMPRISES INCORPORATING A MEMBER OF THE CLASS CONSISTING OF DIGLYCOLALDEHYDE AND ALKALI METLA BISULPHITE DERIVATIVES THEREOF WITH THE GELATIN.
Claim 2
Independent Claim
25 words
A METHOD OF HARDENING GELATIN WHICH COMPRISES INCORPORATING A MEMBER OF THE CLASS CONSISTING OF DIGLYCOLALDEHYDE AND ALKALI METLA BISULPHITE DERIVATIVES THEREOF WITH THE GELATIN.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |