US3299043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polynucleotides
Assignee: Hoechst AG
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Filing: 1964-07-09
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Granted: 1967-01-17
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Schramm Gerhard
- 👤 Grotsch Horst
- 👤 Pollmann Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
C; C07; C07H; C07H21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS OF PREPARING POLYNUCLEOTIDES WHICH COMPRISES REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF NUCLEOTIDES AND NUCLEOSIDES WITH A CYCLIC POLYPHOSPHORIC ACID LOWER ALKYL ESTER.
Claim 2
Dependent Claim
27 words
A PROCESS OF PREPARING POLYNUCLEOTIDES WHICH COMPRISES REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF NUCLEOTIDES AND NUCLEOSIDES WITH A CYCLIC POLYPHOSPHORIC ACID LOWER ALKYL ESTER.
References Cited (Backward Citations)
US3118876A
Cited
US3079379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |