Patent US3888809A successfully refreshed from Google Patents.
US3888809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint containing pullulan
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1974-09-24
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Granted: 1975-06-10
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Expires: 1994-09-24
Abstract
Abstract A paint containing as a main or subsidiary component a pullulan, which is a linear high polymer having repetition units, bonded through Alpha -1,6-linkages, of maltotriose, a trimer of glucose, and has a molecular structure represented by the formula, WHEREIN N REPRESENTS THE POLYMERIZATION DEGREE, AND IS AN INTEGER OF 20 TO 10,000, CAN FORM A FILM EXCELLENT IN FILM CHARACTERISTICS.
Inventors
- 👤 Seizo Nakashio
- 👤 Noriyuki Sekine
- 👤 Nobuhiro Toyota
- 👤 Fumio Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
C; C09; C09D; C09D105/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
4 words
A PAINT CONTAINING PULLULAN.
Claim 2
Dependent Claim
4 words
A PAINT CONTAINING PULLULAN.
Claim 3
Dependent Claim
17 words
A paint according to claim 1, wherein the molecular weight of said pullulan is 10,000 to 5,000,000.
Claim 4
Dependent Claim
11 words
A paint according to claim 1 which is an aqueous paint.
Claim 5
Dependent Claim
13 words
A paint according to claim 1 which contains only pullulan as a vehicle.
Claim 6
Dependent Claim
15 words
A paint according to claim 1 which contains pullulan and a synthetic resin as vehicles.
Claim 7
Dependent Claim
52 words
A paint according to claim 5, wherein the synthetic resin is alkyd resins, amino-alkyd resins, acryl resins, vinyl chloride resins, epoxy resins, polyurethane resins, unsaturated polyester resins, phenolic resins, melamine resins, styrene-butadiene copolymer resins, polyvinyl acetate resins, vinyl acetate-acrylic ester copolymer resins, styrene-acrylic ester or acrylonitrile copolymer resins or vinylidene fluoride resins.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |