Patent US1808809A successfully refreshed from Google Patents.
Patent US2970945A successfully refreshed from Google Patents.
US2970945A
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Diagnostic composition
Assignee: Bayer Corp
•
Filing: 1958-10-03
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Granted: 1961-02-07
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Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Free
- 👤 Leonard B Schweiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/04; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AS A DIAGNOSTIC COMPOSITION, AN INTIMATE ADMIXTURE OF DRY INGREDIENTS CONSISTING ESSENTIALLY OF AN EFFERVESCENT COUPLE AND A MEMBER OF THE GROUP CONSISTING OF P-AMINODIMETHYLANILINE MONOHYDROCHLORIDE AND TETRAMETYYL-PPHENYLENEDIAMINE.
Claim 2
Dependent Claim
28 words
AS A DIAGNOSTIC COMPOSITION, AN INTIMATE ADMIXTURE OF DRY INGREDIENTS CONSISTING ESSENTIALLY OF AN EFFERVESCENT COUPLE AND A MEMBER OF THE GROUP CONSISTING OF P-AMINODIMETHYLANILINE MONOHYDROCHLORIDE AND TETRAMETYYL-PPHENYLENEDIAMINE.
References Cited (Backward Citations)
US2387244A
Cited
US2799660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |