Patent US4679918A successfully refreshed from Google Patents.
US5483339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrophotometer and radiometric measurement apparatus
Assignee: GretagMacbeth LLC
•
Filing: 1994-05-04
•
Granted: 1996-01-09
•
Expires: 2014-05-04
Abstract
Abstract A handheld portable spectrophotometer is provided including keys for input of instructions by a user, an illuminator for illuminating a sample, and a spectral analyzer for separating light reflected from the sample into spectral components to produce a signal corresponding to the level of each spectral component. A processor is provided for executing the user instructions and for analyzing the signal. The results of the signal analysis are presented on a display. A power source is provided for providing power for operation of the handheld portable spectrophotometer.
Inventors
- 👤 Harold Van Aken
- 👤 Alan Kravetz
- 👤 Kenneth Garde
- 👤 William Weber
- 👤 Joseph Corrado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:34
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/02; G01J3/0202; G01J3/0205; G01J3/0218; G01J3/0264; G01J3/0272; G01J3/0283; G01J3/0286; G01J3/10; G01J3/28; G01J3/463; G01J3/50; G01J3/502; G01J3/52; G01J3/524; G01N; G01N21/00; G01N21/17; G01N21/25
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A spectrophotometric and radiometric measurement apparatus, comprising: at least one key for input of instructions by a user; an illuminator for illuminating a sample; means for enabling and disabling operation of said illuminator in response to said instructions; a spectral analyzer for separating light reflected and emanated from said sample into spectral components and producing a signal corresponding to the level of each spectral component; and a processor for executing said instructions and analyzing said signal.
Claim 2
Dependent Claim
76 words
A spectrophotometric and radiometric measurement apparatus, comprising: at least one key for input of instructions by a user; an illuminator for illuminating a sample; means for enabling and disabling operation of said illuminator in response to said instructions; a spectral analyzer for separating light reflected and emanated from said sample into spectral components and producing a signal corresponding to the level of each spectral component; and a processor for executing said instructions and analyzing said signal.
Claim 3
Dependent Claim
24 words
A spectrophotometric and radiometric measurement apparatus according to claim 1 wherein the illuminator is within a housing non-coextensive with a housing containing the processor.
Claim 4
Dependent Claim
15 words
A spectrophotometric and radiometric measurement apparatus according to claim 1, further comprising a replaceable memory.
Claim 5
Dependent Claim
19 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 3, wherein said replaceable memory contains color standards data.
Claim 6
Dependent Claim
19 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 3, wherein said replaceable memory contains application program instructions.
Claim 7
Dependent Claim
25 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 1, further including an adapter to allow the measurement apparatus to communicate with external devices.
Claim 8
Dependent Claim
25 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 1, wherein said processor applies user-selected color difference formulas in the analysis of said signal.
Claim 9
Dependent Claim
28 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 1, wherein said processor provides a facility to compare the results of said analysis with color standards data.
Claim 10
Dependent Claim
28 words
A spectrophotometric and radiometric measurement apparatus in accordance with claim 1, wherein said processor includes a facility for the user to manipulate data stored in the measurement apparatus.
Claim 11
Dependent Claim
22 words
A spectrophotometric and radiometric measurement apparatus according to claim 1, further comprising a display for displaying the results of said signal analysis.
Claim 12
Dependent Claim
25 words
A spectrophotometric and radiometric measurement apparatus in according to claim 1, further comprising a power source for providing power for operation of said measurement apparatus.
Claim 13
Dependent Claim
19 words
A spectrophotometric and radiometric measurement apparatus according to claim 1, further comprising means for transmissive measurement of said sample.
References Cited (Backward Citations)
US2882786A
Cited
US3060790A
Cited
US3389265A
Cited
US3519834A
Cited
DE2101818A1
Cited
US3885878A
Cited
US3690771A
Cited
US3782836A
Cited
US3776642A
Cited
US3910701A
Cited
US3916168A
Cited
US3923399A
Cited
US4096217A
Cited
US4029419A
Cited
US3999864A
Cited
US4076421A
Cited
US4349279A
Cited
US4389118A
Cited
EP0079517A1
Cited
DE3145633A1
Cited
US4583858A
Cited
US4469441A
Cited
US4479718A
Cited
US4449821A
Cited
US4867563A
Cited
DE3315377A1
Cited
US4552458A
Cited
US4711580A
Cited
US4669880A
Cited
US4673818A
Cited
US4773761A
Cited
US4802763A
Cited
EP0284811A2
Cited
US4853879A
Cited
US4937764A
Cited
US4895445A
Cited
US4961646A
Cited
US4886355A
Cited
DE8807666U1
Cited
US4917495A
Cited
EP0375317A2
Cited
DE3843700A1
Cited
EP0427220A2
Cited
US5073029A
Cited
US5319437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |