US3852913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped biodegradable containers from biodegradable thermoplastic oxyalkanoyl polymers
Assignee: Union Carbide Corp
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Filing: 1972-07-28
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Granted: 1974-12-10
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Expires: 1992-07-28
Abstract
Abstract Shaped containers fabricated from material comprising biodegradable thermoplastic oxyalkanoyl polymers, e.g., epsiloncaprolactone polymers, said containers possessing a medium to germinate and grow seed or seedling, and optionally, a seed or seedling in such medium.
Inventors
- 👤 R Clendinning
- 👤 J Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:15
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; A01G9/02; A01G9/021; A01G9/029; A01G9/0291; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES- (A) A BIODEGRADABLE CONTAINER FABRICATED FROM ABOUT 10 TO ABOUT 100 WEIGHT PERCENT OF BIODEGRADABLE THERMOPLASTIC OXYALKANOYL POLYMER, SAID POLYMER HAVING A REDCED VISCOSITY VALUE OF AT LEAST ABOUT 0.1 AND UPWARDS TO ABOUT 12 AND BEING FURTHER CHARACTERIZED IN THAT AT LEAST ABOUT 10 WEIGHT PERCENT OF SAID THERMOPLASTIC OXYALKANOL POLYMER IS ATTRIBUTABLE TO RECURRING OXYALKANOYL UNITS OF THE FORMULA
Claim 2
Dependent Claim
67 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES- (A) A BIODEGRADABLE CONTAINER FABRICATED FROM ABOUT 10 TO ABOUT 100 WEIGHT PERCENT OF BIODEGRADABLE THERMOPLASTIC OXYALKANOYL POLYMER, SAID POLYMER HAVING A REDCED VISCOSITY VALUE OF AT LEAST ABOUT 0.1 AND UPWARDS TO ABOUT 12 AND BEING FURTHER CHARACTERIZED IN THAT AT LEAST ABOUT 10 WEIGHT PERCENT OF SAID THERMOPLASTIC OXYALKANOL POLYMER IS ATTRIBUTABLE TO RECURRING OXYALKANOYL UNITS OF THE FORMULA
Claim 3
Dependent Claim
15 words
The article of manufacture of claim 1 wherein said recurring oxyalkanoyl units have the formula
Claim 4
Dependent Claim
50 words
The article of manufacture of claim 2 wherein said biodegradable thermoplastic oxycaproyl polymer has a reduced viscosity value of at least about 0.2 to about 8 and is further characterized in that at least about 20 weight percent of said polymer is attributable to the recurring oxyalkanoyl unit shown therein.
Claim 5
Dependent Claim
23 words
The article of manufacture of claim 3 wherein at least about 50 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 6
Dependent Claim
28 words
The article of manufacture of claim 4 wherein at least about 60 weight percent to about 100 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 7
Dependent Claim
26 words
The article of manufacture of claim 5 wherein at least about 80 to about 100 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 8
Dependent Claim
23 words
The article of manufacture of claim 5 wherein said polymer has a reduced viscosity value of at least about 0.25 to about 3.
Claim 9
Dependent Claim
17 words
The article of manufacture of claim 7 wherein said germination medium contains a seed or seedling therein.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |