US3009864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process control
Assignee: Union Carbide Corp
•
Filing: 1958-09-18
•
Granted: 1961-11-21
•
Expires: 1978-09-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/86; G01N30/8624; B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; G01N30/88; G01N2030/8886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A PROCESS HAVING AN APPARATUS FOR SAMPLING THE VALUE OF AT LEAST ONE PHYSICAL PARAMETER OF SAID PROCESS AND HAVING PROCESS CONTROL APPARATUS TO EFFECT A SOUGHT CHANGE IN THE PHYSICAL PARAMETERS OF SAID PROCESS IN ACCORDANCE WITH A CONSTANT SIGNAL, THE METHOD OF PROCESS CONTROL WHICH COMPRISES SAMPLING AT LEAST ONE PHYSICAL PARAMETER OF SAID PROCESS, EXPRESSING SAID SAMPLED PARAMETER AS A PERIODIC SIGNAL, CONVERTING EACH OF SAID PERIODIC SIGNALS TO A CONSTANT SIGNAL AND APPLYING SAID CONSTANT SIGNAL TO THE PROCESS CONTROL APPARATUS TO EFFECT A CHANGE IN THE PHYSICAL PARAMETERS OF SAID PROCESS, ALLOWING SAID SOUGHT CHANGE IN SAID PHYSICAL PARAMETERS TO OCCUR PRIOR TO A SUBSEQUENT SAMPLING THEREOF.
Claim 2
Dependent Claim
113 words
IN A PROCESS HAVING AN APPARATUS FOR SAMPLING THE VALUE OF AT LEAST ONE PHYSICAL PARAMETER OF SAID PROCESS AND HAVING PROCESS CONTROL APPARATUS TO EFFECT A SOUGHT CHANGE IN THE PHYSICAL PARAMETERS OF SAID PROCESS IN ACCORDANCE WITH A CONSTANT SIGNAL, THE METHOD OF PROCESS CONTROL WHICH COMPRISES SAMPLING AT LEAST ONE PHYSICAL PARAMETER OF SAID PROCESS, EXPRESSING SAID SAMPLED PARAMETER AS A PERIODIC SIGNAL, CONVERTING EACH OF SAID PERIODIC SIGNALS TO A CONSTANT SIGNAL AND APPLYING SAID CONSTANT SIGNAL TO THE PROCESS CONTROL APPARATUS TO EFFECT A CHANGE IN THE PHYSICAL PARAMETERS OF SAID PROCESS, ALLOWING SAID SOUGHT CHANGE IN SAID PHYSICAL PARAMETERS TO OCCUR PRIOR TO A SUBSEQUENT SAMPLING THEREOF.
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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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |