US4235043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cultivating algae and a covering material used therefor
Assignee: Nippon Carbide Industries Co Inc
•
Filing: 1979-03-14
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Granted: 1980-11-25
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Expires: 1999-03-14
Abstract
Abstract A method for cultivating an alga, which comprises growing the alga in a light field substantially free from light of wavelengths of not more than 340 nm; and a covering material for use in the cultivation of algae, said covering material substantially inhibiting the transmission of light of wavelengths of not more than 340 nm.
Inventors
- 👤 Isamu Harasawa
- 👤 Yukio Hariki
- 👤 Katsuhiko Maeda
- 👤 Kouichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:09
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/12; A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10S; Y10S47/00; Y10S47/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
27 words
A method for cultivating an alga, which comprises growing the alga in a light field substantially free from light of wavelengths of not more than 340 nm.
Claim 2
Independent Claim
27 words
A method for cultivating an alga, which comprises growing the alga in a light field substantially free from light of wavelengths of not more than 340 nm.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein said light field is substantially free from light of wavelengths of not more than 360 nm.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein the light field is substantially free from light of wavelengths of not more than 380 nm.
Claim 5
Independent Claim
31 words
The method of any one of claims 1 to 3 wherein the alga is cultivated in a light field in which light of wavelengths of at least 550 nm is present.
Claim 6
Dependent Claim
48 words
The method of claim 1 wherein the cultivation is carried out by passing said light field through a covering material which substantially inhibits the transmission of light of wavelengths of not more than 380 nm and substantially permits transmission of light of wavelengths of at least 550 nm.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein the alga belongs to Division Cyanophyta, Division Rhodophyta, Division Chrysophyta, Division Phaeophyta, or Division Chlorophyta.
Claim 8
Dependent Claim
35 words
The method of claim 1 wherein the alga belongs to the genera Anacystis, Microcystis, Spirulina, Anabaena, Nostoc, Porphyridium, Porphyra, Gelidium, Coscinodiscus, Skeletonema, Chaetocerus, Navicula, Exuviaella, Amphidinium, Gymnodinium, Nemocystus, Laminaria, Undaria, Chlamydomonas, Chlorella, Scenedesmus, or Cladophora.
Claim 9
Independent Claim
21 words
The method of any one of claims 1, 2, 3 or 5 wherein the source of the light field is sunlight.
Claim 10
Independent Claim
22 words
The method of any one of claims 1, 2, 3 or 5 wherein the source of the light field is artificial light.
References Cited (Backward Citations)
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Cited
US3403471A
Cited
US3542710A
Cited
US3879890A
Cited
US4084346A
Cited
US4087936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |