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1. 发明授权

US5412075A Control of methionine content in photographic grade gelatin 失效
标题翻译：摄影级明胶中甲硫氨酸含量的控制
公开(公告)号：US5412075A
公开(公告)日：1995-05-02
申请号：US227171
申请日：1994-04-13
申请人： Donald P. Wrathall , John E. Keevert, Jr. , Gregg C. Hider , John S. Brand
发明人： Donald P. Wrathall , John E. Keevert, Jr. , Gregg C. Hider , John S. Brand
IPC分类号： C07K14/78 , G03C1/047 , C07K4/12
CPC分类号： C07K14/78 , G03C1/047 , Y10S530/84
摘要： The method for preparing high grade gelatin with a specific methionine content and with reduced methionine variability from batch to batch and within a single extraction includes controlling the amount of and variability of oxidant present during processing of bone stock into gelatin. Such controls include control of oxidant concentration and range in process water, control of volume of process water used in gelatin-making process and restriction of the range of gelatin extracts used in the product gelatin. Once the aim level of oxidant has been set, the total range of oxidant around the set point should be less than 220 meq per 100 kg dry bone.
摘要翻译：用于制备具有特定甲硫氨酸含量并且具有降低的甲硫氨酸变异性的批次和单次提取的高级明胶的方法包括控制在将骨料加工成明胶期间存在的氧化剂的量和变异性。这样的控制包括控制氧化剂浓度和工艺水中的范围，控制明胶生产过程中使用的工艺水的体积以及限制产品明胶中使用的明胶提取物的范围。一旦设定了氧化剂的目标水平，设定点周围的氧化剂的总范围应小于每100 kg干骨中的220meq。

2. 发明授权

US06228573B1 Process for the preparation of high bromide ultrathin tabular grain emulsions 失效
标题翻译：高溴化超薄片状颗粒乳剂的制备方法
公开(公告)号：US06228573B1
公开(公告)日：2001-05-08
申请号：US09464468
申请日：1999-12-15
申请人： John E. Keevert, Jr. , Joe E. Maskasky , Michael G. Antoniades
发明人： John E. Keevert, Jr. , Joe E. Maskasky , Michael G. Antoniades
IPC分类号： G03C1005
CPC分类号： G03C1/07 , G03C1/0051 , G03C2001/03594 , G03C2200/03 , G03C2200/43
摘要： A process for preparing an ultrathin high bromide {111} tabular grain silver halide emulsion in a reaction vessel comprising the steps of (a) forming in the presence of a dispersing medium a population of silver halide grain nuclei containing twin planes, and (b) growing the silver halide grain nuclei containing twin planes to form high bromide {111} tabular silver halide grains by the addition of silver and halide ions, WHEREIN the majority of the silver added during growth step (b) is added at a pBr of less than 2.6 and in the presence of a triaminopyrimidine grain growth modifier containing mutually independent 4, 5 and 6 ring position amino substituents, the 4 and 6 ring position substituents being hydroamino substituents. High bromide ultrathin {111} tabular grain emulsions prepared by the process of the invention provide thinner tabular grains than that obtained in the absence of the triaminopyrimidine grain growth modifier. Additionally, the double jet process of the invention is highly controllable and commercially scalable.
摘要翻译：一种在反应容器中制备超薄高溴酸盐{111}片状粒状卤化银乳剂的方法，包括以下步骤：（a）在分散介质存在下形成含有双面平面的卤化银颗粒核团，和（b）生长含有双平面的卤化银颗粒核，通过加入银和卤离子形成高溴化物{111}片状卤化银颗粒，因为在生长步骤（b）中加入的大多数银以小于等于 2.6和在含有相互独立的4,5和6个环位氨基取代基的三氨基嘧啶晶粒生长调节剂存在下，4和6环位置取代基是氢氨基取代基。通过本发明的方法制备的高溴化超薄{111}片状颗粒乳剂提供比不存在三氨基嘧啶晶粒生长调节剂时更薄的片状颗粒。此外，本发明的双喷射方法是高度可控的和商业上可扩展的。

3. 发明授权

US4945035A Photographic emulsions containing internally modified silver halide grains 失效
公开(公告)号：US4945035A
公开(公告)日：1990-07-31
申请号：US179377
申请日：1988-04-08
申请人： John E. Keevert, Jr. , Woodrow G. McDugle , Raymond S. Eachus
发明人： John E. Keevert, Jr. , Woodrow G. McDugle , Raymond S. Eachus
IPC分类号： G03C1/035 , G03C1/015 , G03C1/06 , G03C1/09
CPC分类号： G03C1/09 , G03C1/015
摘要： Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains containing greater than 50 mole percent chloride and less than 5 mole percent iodide, based on total silver, with any residual halide being bromide, said grains exhibiting a face centered cubic crystal lattice structure formed in the presence of a hexacoordination complex of rhenium, ruthenium, or osmium with at least four cyanide ligands. The emulsions exhibit increased sensitivity.

4. 发明授权

US5385819A Preparation of thin tabular grain silver halide emulsions using synthetic polymeric peptizers 失效
标题翻译：使用合成聚合物胶溶剂制备薄的片状银卤化银乳剂
公开(公告)号：US5385819A
公开(公告)日：1995-01-31
申请号：US171588
申请日：1993-12-22
申请人： Wayne A. Bowman , Roger A. Weiss , Gerald W. Klein , John E. Keevert, Jr. , Shane C. Weber
发明人： Wayne A. Bowman , Roger A. Weiss , Gerald W. Klein , John E. Keevert, Jr. , Shane C. Weber
IPC分类号： G03C1/015 , G03C1/005 , G03C1/035 , G03C1/047 , G03C1/053 , G03C1/07 , G03C1/04
CPC分类号： G03C1/053 , G03C1/0051
摘要： A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect ratio of greater than 8 account for greater than 50 percent of the total grain projected area, comprises the steps of nucleating the silver halide grains with a gelatino-peptizer or with the use of certain synthetic polymers that serve as effective nucleation peptizers and then growing the silver halide grains with the use of either a gelatino-peptizer or certain synthetic polymers that serve as effective growth peptizers.
摘要翻译：一种制备由卤化银颗粒组成的薄片状颗粒卤化银乳剂的方法，该卤化银颗粒的卤化物含量至少为50％（摩尔）溴化物，其中厚度小于0.15微米，长宽比大于8的片状颗粒占据占总颗粒投影面积的大于50％的步骤包括用明胶胶溶剂将卤化银颗粒成核的步骤或使用某些合成聚合物作为有效的成核胶溶剂，然后使用用作有效成长胶溶剂的明胶胶溶剂或某些合成聚合物。

5. 发明授权

US4933272A Photographic emulsions containing internally modified silver halide grains 失效
公开(公告)号：US4933272A
公开(公告)日：1990-06-12
申请号：US179376
申请日：1988-04-08
申请人： Woodrow G McDugle , Anthony D. Gingello , John A. Haefner , John E. Keevert, Jr. , Alfred P. Marchetti
发明人： Woodrow G McDugle , Anthony D. Gingello , John A. Haefner , John E. Keevert, Jr. , Alfred P. Marchetti
IPC分类号： G03C1/035 , G03C1/015 , G03C1/06 , G03C1/09 , G03C1/485
CPC分类号： G03C1/015 , G03C1/09 , G03C1/48523
摘要： Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a nitrosyl or thionitrosyl coordination ligand and a transition metal chosen from groups 5 to 10 inclusive of the periodic table of elements.

6. 发明授权

US06656674B2 Ultrathin tabular grain silver halide emulsion with improved performance in multilayer photographic element 失效
标题翻译：具有改善多层照相元件性能的超薄片状银卤化银乳剂
公开(公告)号：US06656674B2
公开(公告)日：2003-12-02
申请号：US10027300
申请日：2001-12-21
申请人： Tommie L. Royster, Jr. , John E. Keevert, Jr. , Sharon G. Johnston , Donald L. Black , David W. Sandford
发明人： Tommie L. Royster, Jr. , John E. Keevert, Jr. , Sharon G. Johnston , Donald L. Black , David W. Sandford
IPC分类号： G03C1005
CPC分类号： G03C1/0051 , G03C2001/03511 , G03C2001/03552 , G03C2001/03564 , G03C2200/03
摘要： A photographic element which comprises a support bearing: (i) a first radiation-sensitive silver halide emulsion image-forming layer comprising a high bromide tabular grain emulsion including tabular grains having {111} major faces, exhibiting an average thickness of at least 0.07 &mgr;m and an average aspect ratio of at least 2; and (ii) a second radiation-sensitive silver halide emulsion image-forming layer comprising an ultrathin tabular grain emulsion including tabular grains having {111} major faces, containing greater than 70 mole percent bromide and at least 0.25 mole percent iodide, exhibiting an average thickness of less than 0.07 &mgr;m and an average equivalent circular diameter of at least 0.7 &mgr;m, and having latent image forming chemical sensitization sites on the surfaces of the tabular grains; wherein the surface chemical sensitization sites include epitaxially deposited silver halide protrusions containing an actual chloride concentration of from 20-50 mole %, based on epitaxially deposited silver, the chloride concentration being at least 10 mole percent higher than that of the tabular grains, and containing an actual iodide concentration of from 1 to 7 mole %, based on epitaxially deposited silver.
摘要翻译：一种照相元件，其特征在于，包括一支承体：（i）第一辐射敏感的卤化银乳剂图像形成层，其包含高溴化物片状颗粒乳剂，其包含具有{111}主面的平片状颗粒，平均厚度至少为0.07μm 平均纵横比至少为2; 和（ii）包含超薄片状颗粒乳剂的第二种辐射敏感的卤化银乳剂图像形成层，其包括具有{111}主面的片状颗粒，其含有大于70摩尔％的溴化物和至少0.25摩尔％的碘化物，厚度小于0.07μm，平均当量圆直径至少为0.7μm，并且在片状颗粒的表面上具有潜像形成的化学敏化位点; 其中所述表面化学增感部位包括外延沉积的银离子突出物，所述外延沉积的卤化银突起物以外延沉积的银为基准，其实际氯化物浓度为20-50摩尔％，氯化物浓度比片状颗粒高至少10摩尔％，并含有实际的碘化物浓度为1至7摩尔％，基于外延沉积的银。

7. 发明授权

US5580712A Silver halide emulsions, elements and methods of making same using synthetic biopolymer peptizers 失效
标题翻译：卤化银乳剂，使用合成生物聚合物胶溶剂制备其的元素和方法
公开(公告)号：US5580712A
公开(公告)日：1996-12-03
申请号：US383348
申请日：1995-02-03
申请人： John E. Keevert, Jr. , Shane C. Weber , Ramesh Jagannathan , Gerald W. Klein
发明人： John E. Keevert, Jr. , Shane C. Weber , Ramesh Jagannathan , Gerald W. Klein
IPC分类号： C07K14/78 , G03C1/005 , G03C1/015 , G03C1/047 , C12P21/00
CPC分类号： G03C1/0051 , C07K14/78 , G03C1/047 , G03C1/015
摘要： Certain synthetically prepared biopolymers are useful as peptizers in the preparation of photographic silver halide emulsions and elements. Such materials can be used as either nucleation or growth peptizers in place of common peptizing colloids, such as gelatins. The biopolymers can be prepared using recombinant or chemical synthetic methods and designed to have a particular affinity (either high or low) for silver ions. Thus, they can be used to control silver halide grain morphology in the emulsions.
摘要翻译：某些合成制备的生物聚合物可用作制备照相卤化银乳剂和元素的胶溶剂。这种材料可以用作成核或生长胶溶剂代替普通的胶溶胶体，例如明胶。生物聚合物可以使用重组或化学合成方法制备，并设计为对银离子具有特殊的亲和力（高或低）。因此，它们可用于控制乳液中的卤化银颗粒形态。

8. 发明授权

US5380642A Process for preparing a thin tabular grain silver halide emulsion 失效
标题翻译：制备薄片状卤化银乳剂的方法
公开(公告)号：US5380642A
公开(公告)日：1995-01-10
申请号：US173300
申请日：1993-12-22
申请人： Michael R. Roberts , Wai K. Lam , Wayne A. Bowman , John E. Keevert, Jr. , Byron H. Rubin
发明人： Michael R. Roberts , Wai K. Lam , Wayne A. Bowman , John E. Keevert, Jr. , Byron H. Rubin
IPC分类号： G03C1/015 , G03C1/005 , G03C1/035 , G03C1/047 , G03C1/053 , G03C1/07 , G03C1/04
CPC分类号： G03C1/053 , G03C1/0051 , G03C1/047 , G03C2001/0055 , G03C2001/03594
摘要： A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect ratio of greater than 8 account for greater than 50 percent of the total grain projected area, comprises the steps of nucleating the silver halide grains with a gelatino-peptizer or with the use of certain synthetic polymers that serve as effective nucleation peptizers and then growing the silver halide grains with the use of either a gelatino-peptizer or certain synthetic polymers that serve as effective growth peptizers.
摘要翻译：一种制备由卤化银颗粒组成的薄片状颗粒卤化银乳剂的方法，该卤化银颗粒的卤化物含量至少为50％（摩尔）溴化物，其中厚度小于0.15微米，长宽比大于8的片状颗粒占据占总颗粒投影面积的大于50％的步骤包括用明胶胶溶剂将卤化银颗粒成核的步骤或使用某些合成聚合物作为有效的成核胶溶剂，然后使用用作有效成长胶溶剂的明胶胶溶剂或某些合成聚合物。

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