UST878021I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST878021I4 UST878021I4 US878021DH UST878021I4 US T878021 I4 UST878021 I4 US T878021I4 US 878021D H US878021D H US 878021DH US T878021 I4 UST878021 I4 US T878021I4
- Authority
- US
- United States
- Prior art keywords
- defensive publication
- acid
- antifoggants
- defensive
- applications
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
Definitions
- polycarboxylic compounds stabilize photographic systems in which gold and labile selenium are employed as sensitizing agents.
- Particularly effective antifoggants include maleic acid, maleic anhydride, fumaric acid, succinic acid, succinic anhydride, music acid, diethyl malonic acid, and 1,3,5-tricarboxypentane.
- the effectiveness of the disclosed antifoggants is enhanced by the presence of a tetraazaindene antifoggant compound, but is not dependent thereupon.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed sub ect matter.
PUBLISHED SEPTEMBER 29, 1970 T878,021 USE OF POLYCARBOXYLIC ACIDS AND ACID DERIVATIVES AS ANTIFOGGANTS FOR CER- TAIN EMULSIONS Charles Allen Gofie, Kodak Park Works, Rochester, NY. 14650 Filed Mar. 9, 1970, Ser. No. 17,878 Int. Cl. G03c N34 US. Cl. 96-109 No Drawing. 30 Pages Specification Polycarboxylic acids, anhydrides, imides, esters, and lactones are effective antifoggants for silver halide photographic emulsions sensitized by noble metals and selenium. Examples illustrate that polycarboxylic compounds stabilize photographic systems in which gold and labile selenium are employed as sensitizing agents. Particularly effective antifoggants include maleic acid, maleic anhydride, fumaric acid, succinic acid, succinic anhydride, music acid, diethyl malonic acid, and 1,3,5-tricarboxypentane. The effectiveness of the disclosed antifoggants is enhanced by the presence of a tetraazaindene antifoggant compound, but is not dependent thereupon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1787870A | 1970-03-09 | 1970-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST878021I4 true UST878021I4 (en) | 1970-09-29 |
Family
ID=21785039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US878021D Pending UST878021I4 (en) | 1970-03-09 | 1970-03-09 | Defensive publication |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | UST878021I4 (en) |
| FR (1) | FR2084348A5 (en) |
-
1970
- 1970-03-09 US US878021D patent/UST878021I4/en active Pending
-
1971
- 1971-03-09 FR FR7108061A patent/FR2084348A5/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2084348A5 (en) | 1971-12-17 |
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