US3923729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biodegradable transplanter containers
Assignee: Union Carbide Corp
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Filing: 1974-07-15
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Granted: 1975-12-02
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Expires: 1994-07-15
Abstract
Abstract Shaped containers fabricated from material comprising biodegradable thermoplastic oxyalkanoyl polymers, e.g., epsiloncaprolactone polymers, and naturally occurring biodegradable product, e.g., fir bark, said containers possessing a germination medium, and optionally, a seed or seedling therein.
Inventors
- 👤 Robert A Clendinning
- 👤 James E Potts
- 👤 Walter D Niegisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; A01C; A01C1/00; A01C1/04; A01C1/046; A01G9/02; A01G9/021; A01G9/029; A01G9/0291; C; C08; C08K; C08K5/00; C08L; C08L101/00; C08L67/00; C08L69/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
74 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES: (A) A BIODEGRADABLE CONTAINER FABRICATED FROM A MIXTURE OF SUBSTANCES COMPRISING (I) FROM ABOUT 5 TO ABOUT 95 WEIGHT PERCENT OF BIODEGRADABLE THERMOPLASTIC OXYALKANOYL POLYMER, SAID POLYMER HAVING A REDUCED VISCOSITY VALUE OF AT LEAST ABOUT 0.1 AND UPWARDS TO ABOUT 12 AND BEING FURTHEER CHARACTERIZED IN THAT AT LEAST ABOUT 10 WEIGHT PERCENT OF SAID THERMOPLASTIC OXYALKANOLYL POLYMER IS ATTRIBUTABLE TO RECURRING OXYALKANOYL UNITS OF THE FORMULA
Claim 2
Dependent Claim
74 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES: (A) A BIODEGRADABLE CONTAINER FABRICATED FROM A MIXTURE OF SUBSTANCES COMPRISING (I) FROM ABOUT 5 TO ABOUT 95 WEIGHT PERCENT OF BIODEGRADABLE THERMOPLASTIC OXYALKANOYL POLYMER, SAID POLYMER HAVING A REDUCED VISCOSITY VALUE OF AT LEAST ABOUT 0.1 AND UPWARDS TO ABOUT 12 AND BEING FURTHEER CHARACTERIZED IN THAT AT LEAST ABOUT 10 WEIGHT PERCENT OF SAID THERMOPLASTIC OXYALKANOLYL 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 oxyalkanoyl 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
26 words
The article of manufacture of claim 4 wherein at least about 80 to about 100 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 7
Dependent Claim
23 words
The article of manufacture of claim 4 wherein said polymer has a reduced viscosity value of at least about 0.25 to about 3.
Claim 8
Dependent Claim
17 words
The article of manufacture of claim 6 wherein said germination medium contains a seed or seedling therein.
Claim 9
Dependent Claim
69 words
The article of manufacture of claim 4 wherein said biodegradable container is fabricated from a mixture of substances comprising (i) from about 10 to about 90 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, (ii) from about 10 to about 90 weight percent of naturally occurring biodegradable product, and (iii) from >0 to about 75 weight percent of ingredients of the group consisting of plastic additives, fillers, and mixtures thereof.
Claim 10
Dependent Claim
69 words
The article of manufacture of claim 4 wherein said biodegradable container is fabricated from a mixture of substances comprising (i) from about 20 to about 80 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, (ii) from about 20 to about 80 weight percent of naturally occurring biodegradable product, and (iii) from >0 to about 60 weight percent of ingredients of the group consisting of plastic additives, fillers, and mixtures thereof.
Claim 11
Dependent Claim
17 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is a cellulosic product.
Claim 12
Dependent Claim
16 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is brewer''s yeast.
Claim 13
Dependent Claim
15 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is urea.
Claim 14
Dependent Claim
16 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is rice hulls.
Claim 15
Dependent Claim
17 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is cotton seed hulls.
Claim 16
Dependent Claim
17 words
The article of manufacture of claim 1 wherein said naturally occurring biodegradable product is soya bean powder.
Claim 17
Dependent Claim
74 words
An article of manufacture which comprises: (a) a biodegradable container fabricated from a mixture of substances comprising (i) from about 5 to about 95 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, said polymer having a reduced 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 oxyalkanoyl polymer is attributable to recurring oxyalkanoyl units of the formula
Claim 18
Dependent Claim
74 words
An article of manufacture which comprises: (a) a biodegradable container fabricated from a mixture of substances comprising (i) from about 5 to about 95 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, said polymer having a reduced 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 oxyalkanoyl polymer is attributable to recurring oxyalkanoyl units of the formula
Claim 19
Dependent Claim
15 words
The article of manufacture of claim 16 wherein said recurring oxyalkanoyl units have the formula
Claim 20
Dependent Claim
50 words
The article of manufacture of claim 17 wherein said biodegradable thermoplastic oxyalkanoyl 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 21
Dependent Claim
23 words
The article of manufacture of claim 18 wherein at least about 50 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 22
Dependent Claim
26 words
The article of manufacture of claim 19 wherein at least about 80 to about 100 weight percent of said polymer is attributable to recurring oxycaproyl units.
Claim 23
Dependent Claim
23 words
The article of manufacture of claim 19 wherein said polymer has a reduced viscosity value of at least about 0.25 to about 3.
Claim 24
Dependent Claim
17 words
The article of manufacture of claim 21 wherein said germination medium contains a seed or seedling therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |