Patent US2803533A successfully refreshed from Google Patents.
US3661718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for taking and transferring bacteria samples
Assignee: Birko Chemical Corp
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Filing: 1970-01-26
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Granted: 1972-05-09
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Expires: 1990-01-26
Abstract
Abstract A tape dispenser, having means for supporting a nondrying adhesive tape therein, includes a depending mandrel having a flat surface of predetermined area. Tape from the roll is unrolled and pulled over the mandrel with the sticky side out. The flat surface of mandrel covered with the tape is pressed on a surface to be tested for bacteria, and the contaminated tape, over the mandrel, is then pressed onto surface of a culture medium. By using gelatin-like culture medium, it may be held upside down for transfer of bacteria from the dispenser, to prevent extraneous contamination from airborne bacteria.
Inventors
- 👤 Rose J Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:09
CPC Classifications
C; C12; C12M; C12M33/00; C12M33/02; G; G01; G01N; G01N1/00; G01N1/28; G01N1/2813; G01N2001/2833
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The method recited in claim 1 including forming said adhesive surface of a predetermined area whereby uniform bacteria samples are taken.
Claim 2
Dependent Claim
29 words
The method recited in claiM 1 including placing said adhesive surface on a mandrel of a predetermined size and shape with the adhesive side directed away from said mandrel.
Claim 3
Dependent Claim
29 words
The method recited in claim 1 including providing said adhesive surface in tape form, unwinding said tape, and pulling said tape over a mandrel prior to said pressing step.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |